diff --git a/SampleCode/iOS/NEMeetingDemo.xcodeproj/project.pbxproj b/SampleCode/iOS/NEMeetingDemo.xcodeproj/project.pbxproj
index 797bbc25..5174739d 100644
--- a/SampleCode/iOS/NEMeetingDemo.xcodeproj/project.pbxproj
+++ b/SampleCode/iOS/NEMeetingDemo.xcodeproj/project.pbxproj
@@ -214,6 +214,7 @@
 		41FE2B9124AD8F5800624342 /* SystemAuthHelper.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = SystemAuthHelper.m; sourceTree = "<group>"; };
 		5354C499286EEDDB000F5193 /* NSEditSubscribeMeetingVC.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = NSEditSubscribeMeetingVC.m; sourceTree = "<group>"; };
 		5354C49A286EEDDB000F5193 /* NSEditSubscribeMeetingVC.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = NSEditSubscribeMeetingVC.h; sourceTree = "<group>"; };
+		537437482ADFD7110058ECBB /* MeetingConfigEnum.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = MeetingConfigEnum.h; sourceTree = "<group>"; };
 		7F47C73E59370BEEAE7064C7 /* Pods-NEMeetingDemo-Broadcaster.debug.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-NEMeetingDemo-Broadcaster.debug.xcconfig"; path = "Target Support Files/Pods-NEMeetingDemo-Broadcaster/Pods-NEMeetingDemo-Broadcaster.debug.xcconfig"; sourceTree = "<group>"; };
 		9E451CEF25B041BF00E69CDE /* MeetingMenuSelectVC.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = MeetingMenuSelectVC.h; sourceTree = "<group>"; };
 		9E451CF025B041BF00E69CDE /* MeetingMenuSelectVC.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = MeetingMenuSelectVC.m; sourceTree = "<group>"; };
@@ -266,6 +267,7 @@
 		410B434224AC665600017FA6 /* Section */ = {
 			isa = PBXGroup;
 			children = (
+				537437482ADFD7110058ECBB /* MeetingConfigEnum.h */,
 				41E9117825010E6900E63D80 /* CustomViewController.h */,
 				41E9117925010E6900E63D80 /* CustomViewController.m */,
 				410B431B24AB295B00017FA6 /* EnterMeetingVC.h */,
@@ -898,9 +900,11 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CODE_SIGN_ENTITLEMENTS = NEMeetingDemo/NEMeetingDemo.entitlements;
 				CODE_SIGN_IDENTITY = "Apple Development";
-				CODE_SIGN_STYLE = Automatic;
+				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
+				CODE_SIGN_STYLE = Manual;
 				CURRENT_PROJECT_VERSION = 11000;
-				DEVELOPMENT_TEAM = 569GNZ5392;
+				DEVELOPMENT_TEAM = "";
+				"DEVELOPMENT_TEAM[sdk=iphoneos*]" = 7C9A6NRV5L;
 				ENABLE_BITCODE = NO;
 				FRAMEWORK_SEARCH_PATHS = (
 					"$(inherited)",
@@ -917,9 +921,10 @@
 				);
 				MARKETING_VERSION = 3.0.0;
 				ONLY_ACTIVE_ARCH = YES;
-				PRODUCT_BUNDLE_IDENTIFIER = com.netease.meetinglib.sdk.NEMeetingDemo;
+				PRODUCT_BUNDLE_IDENTIFIER = com.netease.yunxin.meeting.hawk;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE_SPECIFIER = "";
+				"PROVISIONING_PROFILE_SPECIFIER[sdk=iphoneos*]" = Meeting_Dev;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VALIDATE_WORKSPACE = NO;
 			};
@@ -932,9 +937,11 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CODE_SIGN_ENTITLEMENTS = NEMeetingDemo/NEMeetingDemo.entitlements;
 				CODE_SIGN_IDENTITY = "Apple Development";
-				CODE_SIGN_STYLE = Automatic;
+				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
+				CODE_SIGN_STYLE = Manual;
 				CURRENT_PROJECT_VERSION = 11000;
-				DEVELOPMENT_TEAM = 569GNZ5392;
+				DEVELOPMENT_TEAM = "";
+				"DEVELOPMENT_TEAM[sdk=iphoneos*]" = 7C9A6NRV5L;
 				ENABLE_BITCODE = NO;
 				FRAMEWORK_SEARCH_PATHS = (
 					"$(inherited)",
@@ -948,9 +955,10 @@
 					"@executable_path/Frameworks",
 				);
 				MARKETING_VERSION = 3.0.0;
-				PRODUCT_BUNDLE_IDENTIFIER = com.netease.meetinglib.sdk.NEMeetingDemo;
+				PRODUCT_BUNDLE_IDENTIFIER = com.netease.yunxin.meeting.hawk;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE_SPECIFIER = "";
+				"PROVISIONING_PROFILE_SPECIFIER[sdk=iphoneos*]" = Meeting_Dev;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VALIDATE_WORKSPACE = NO;
 			};
@@ -1021,9 +1029,11 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CODE_SIGN_ENTITLEMENTS = NEMeetingDemo/NEMeetingDemo.entitlements;
 				CODE_SIGN_IDENTITY = "Apple Development";
-				CODE_SIGN_STYLE = Automatic;
+				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
+				CODE_SIGN_STYLE = Manual;
 				CURRENT_PROJECT_VERSION = 11000;
 				DEVELOPMENT_TEAM = "";
+				"DEVELOPMENT_TEAM[sdk=iphoneos*]" = 7C9A6NRV5L;
 				ENABLE_BITCODE = NO;
 				FRAMEWORK_SEARCH_PATHS = (
 					"$(inherited)",
@@ -1037,9 +1047,10 @@
 					"@executable_path/Frameworks",
 				);
 				MARKETING_VERSION = 3.0.0;
-				PRODUCT_BUNDLE_IDENTIFIER = com.netease.meetinglib.sdk.NEMeetingDemo;
+				PRODUCT_BUNDLE_IDENTIFIER = com.netease.yunxin.meeting.hawk;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE_SPECIFIER = "";
+				"PROVISIONING_PROFILE_SPECIFIER[sdk=iphoneos*]" = Meeting_Dev;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VALIDATE_WORKSPACE = NO;
 			};
diff --git a/SampleCode/iOS/NEMeetingDemo/Base.lproj/Main.storyboard b/SampleCode/iOS/NEMeetingDemo/Base.lproj/Main.storyboard
index a0afe58d..d96828d3 100644
--- a/SampleCode/iOS/NEMeetingDemo/Base.lproj/Main.storyboard
+++ b/SampleCode/iOS/NEMeetingDemo/Base.lproj/Main.storyboard
@@ -119,7 +119,7 @@
                 </viewController>
                 <placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>
             </objects>
-            <point key="canvasLocation" x="-191.30434782608697" y="119.86607142857142"/>
+            <point key="canvasLocation" x="-29" y="96"/>
         </scene>
         <!--网易会议Demo-->
         <scene sceneID="K1h-Jj-JLh">
@@ -643,6 +643,17 @@
                                     <action selector="onLeaveCurrentMeeting:" destination="chG-oq-e3a" eventType="touchUpInside" id="46E-kl-MGL"/>
                                 </connections>
                             </button>
+                            <textField opaque="NO" contentMode="scaleToFill" horizontalHuggingPriority="248" fixedFrame="YES" contentHorizontalAlignment="left" contentVerticalAlignment="center" placeholder="媒体流加密密钥" textAlignment="natural" minimumFontSize="17" translatesAutoresizingMaskIntoConstraints="NO" id="lI8-td-lfP">
+                                <rect key="frame" x="16" y="731" width="382" height="34"/>
+                                <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
+                                <fontDescription key="fontDescription" type="system" pointSize="14"/>
+                                <textInputTraits key="textInputTraits"/>
+                            </textField>
+                            <view contentMode="scaleToFill" fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="Eju-Sw-TxT">
+                                <rect key="frame" x="16" y="765" width="382" height="1"/>
+                                <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
+                                <color key="backgroundColor" white="0.66666666666666663" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                            </view>
                         </subviews>
                         <viewLayoutGuide key="safeArea" id="Ks5-zp-udT"/>
                         <color key="backgroundColor" systemColor="systemBackgroundColor"/>
@@ -660,6 +671,7 @@
                     <navigationItem key="navigationItem" title="网易会议" id="6xJ-VD-2cX"/>
                     <connections>
                         <outlet property="configCheckBox" destination="peJ-8z-lnX" id="DUM-Rw-k47"/>
+                        <outlet property="encryptionKeyInput" destination="lI8-td-lfP" id="ZYM-PV-JX8"/>
                         <outlet property="enterBtn" destination="Wbf-5g-AtC" id="Epk-8k-PO1"/>
                         <outlet property="meetingIdInput" destination="hUm-RV-4u6" id="f88-Y3-893"/>
                         <outlet property="nickInput" destination="IHf-Fa-kfF" id="aeH-Dq-6TT"/>
diff --git a/SampleCode/iOS/NEMeetingDemo/Common/ViewController/BaseViewController.m b/SampleCode/iOS/NEMeetingDemo/Common/ViewController/BaseViewController.m
index cefbe225..5ee6df18 100644
--- a/SampleCode/iOS/NEMeetingDemo/Common/ViewController/BaseViewController.m
+++ b/SampleCode/iOS/NEMeetingDemo/Common/ViewController/BaseViewController.m
@@ -50,7 +50,9 @@ - (void)showErrorCode:(NSInteger)code msg:(NSString *)msg {
 
 
 - (BOOL)shouldAutorotate {
-    return NO;
+    return YES;
+}
+- (UIInterfaceOrientationMask)supportedInterfaceOrientations {
+  return UIInterfaceOrientationMaskAll;
 }
-
 @end
diff --git a/SampleCode/iOS/NEMeetingDemo/Section/EnterMeetingVC.m b/SampleCode/iOS/NEMeetingDemo/Section/EnterMeetingVC.m
index 3bbc18e3..e3f553ec 100644
--- a/SampleCode/iOS/NEMeetingDemo/Section/EnterMeetingVC.m
+++ b/SampleCode/iOS/NEMeetingDemo/Section/EnterMeetingVC.m
@@ -18,13 +18,13 @@ @interface EnterMeetingVC ()<CheckBoxDelegate, MeetingServiceListener,MeetingMen
 
 @property (weak, nonatomic) IBOutlet CheckBox *configCheckBox;
 @property (weak, nonatomic) IBOutlet CheckBox *settingCheckBox;
-
 @property (weak, nonatomic) IBOutlet UITextField *meetingIdInput;
 @property (weak, nonatomic) IBOutlet UITextField *nickInput;
 @property (weak, nonatomic) IBOutlet UILabel *titleLab;
 @property (weak, nonatomic) IBOutlet UIButton *enterBtn;
 @property (weak, nonatomic) IBOutlet UITextField *passworkInput;
 @property (weak, nonatomic) IBOutlet UITextField *tagInput;
+@property (strong, nonatomic) IBOutlet UITextField *encryptionKeyInput;
 @property (nonatomic, strong) NSArray <NEMeetingMenuItem *> *fullToolbarMenuItems;
 @property (nonatomic, strong) NSArray <NEMeetingMenuItem *> *fullMoreMenuItems;
 // 自定义菜单类型：toolbar/更多
@@ -60,7 +60,7 @@ - (void)setupUI {
     @"隐藏Sip菜单",        @"显示用户角色标签",   @"显示会议结束提醒", @"聊天室文件消息",
     @"聊天室图片消息",     @"开启静音检测",       @"关闭静音包",       @"显示屏幕共享者画面",
     @"显示白板共享者画面", @"设置白板透明", @"前置摄像头镜像",  @"显示麦克风浮窗",
-    @"入会时隐藏直播菜单", @"开启音频共享"
+    @"入会时隐藏直播菜单", @"开启音频共享", @"开启加密"
   ]];
   _settingCheckBox.delegate = self;
   [self.settingCheckBox setItemSelected:YES index:MeetingSettingTypeChatroomEnableFile];
@@ -91,6 +91,13 @@ - (IBAction)onEnterMeetingAction:(id)sender {
   params.password = _passworkInput.text;
   params.tag = _tagInput.text;
 
+  // 是否开启媒体流加密
+  if ([self selectedSetting:MeetingSettingTypeEnableEncryption]) {
+    NEEncryptionConfig *encryptionConfig = [[NEEncryptionConfig alloc] init];
+    encryptionConfig.encryptionMode = GMCryptoSM4ECB;
+    encryptionConfig.encryptKey = _encryptionKeyInput.text;
+    params.encryptionConfig = encryptionConfig;
+  }
   NEJoinMeetingOptions *options = [[NEJoinMeetingOptions alloc] init];
   // 默认会议配置
   if (![self selectedSetting:MeetingSettingTypeDefaultSetting]) {
diff --git a/SampleCode/iOS/NEMeetingDemo/Section/MainViewController.m b/SampleCode/iOS/NEMeetingDemo/Section/MainViewController.m
index 8630f4f6..bb602a96 100644
--- a/SampleCode/iOS/NEMeetingDemo/Section/MainViewController.m
+++ b/SampleCode/iOS/NEMeetingDemo/Section/MainViewController.m
@@ -13,9 +13,7 @@
 #import "MeetingSettingVC.h"
 
 @interface MainViewController ()<MeetingServiceListener>
-
 @property (nonatomic, strong) UIButton *mulIMBtn;
-@property (nonatomic, strong) TimerButton *restoreMeetingBtn;
 @property (nonatomic, strong) UIViewController *preVC;
 @property (nonatomic, strong) UIAlertController *alert;
 @end
@@ -31,16 +29,6 @@ - (void)viewDidLoad {
                                                object:nil];
 }
 
-- (void)viewDidLayoutSubviews {
-    [super viewDidLayoutSubviews];
-    
-    if (@available(iOS 11.0, *)) {
-        _restoreMeetingBtn.frame = CGRectMake(0, self.view.safeAreaInsets.top, self.view.width, 20);
-    } else {
-        _restoreMeetingBtn.frame = CGRectMake(0, 64, self.view.width, 20);
-    }
-}
-
 - (void)onMeetingInitAction:(NSNotification *)note {
     [[NEMeetingKit getInstance].getMeetingService addListener:self];
     [self autoLogin];
@@ -65,13 +53,6 @@ - (void)onEnterMulAction:(UIButton *)sender {
     [self.navigationController pushViewController:vc animated:YES];
 }
 
-- (void)onRestoreMeetingAction:(UIButton *)sender {
-    BOOL ret = [[NEMeetingKit getInstance].getMeetingService returnToMeeting];
-    if (ret) {
-        sender.hidden = YES;
-    }
-}
-
 - (IBAction)onAppSettings:(id)sender {
     AppSettingsVC *vc = [[AppSettingsVC alloc] init];
     [self.navigationController pushViewController:vc animated:YES];
@@ -98,7 +79,6 @@ - (void)setupUI {
 #endif
     UIBarButtonItem *item = [[UIBarButtonItem alloc] initWithCustomView:self.mulIMBtn];
     self.navigationItem.rightBarButtonItem = item;
-    [[UIApplication sharedApplication].keyWindow addSubview:self.restoreMeetingBtn];
 }
 
 - (UIButton *)mulIMBtn {
@@ -150,23 +130,7 @@ - (void)onInjectedMenuItemClick:(NEMenuClickInfo *)clickInfo
     if (clickInfo.itemId == 100) {
     } else if (clickInfo.itemId == 111) {
         [NEMeetingKit.getInstance.getMeetingService
-            minimizeCurrentMeeting:^(NSInteger resultCode, NSString *resultMsg, id resultData) {
-              if (resultCode == 0) {
-                [NEMeetingKit.getInstance.getMeetingService
-                    getCurrentMeetingInfo:^(NSInteger resultCode, NSString *_Nonnull resultMsg,
-                                            NEMeetingInfo *_Nonnull info) {
-                      if (!info) {
-                        NSLog(@"meetingNum: %@ meetingId: %llu", info.meetingNum, info.meetingId);
-                        self.restoreMeetingBtn.neTitle = info.subject;
-                        int64_t interval = info.duration / 1000;
-                        if (interval > 0) {
-                          self.restoreMeetingBtn.startTime = interval;
-                        }
-                        self.restoreMeetingBtn.hidden = NO;
-                      }
-                    }];
-              }
-            }];
+            minimizeCurrentMeeting:^(NSInteger resultCode, NSString *resultMsg, id resultData) {}];
       } else {
         _alert = [UIAlertController alertControllerWithTitle:@"" message:[NSString stringWithFormat:@"%@-%@",clickInfo,meetingInfo] preferredStyle:UIAlertControllerStyleAlert];
         [_alert addAction:[UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
@@ -184,41 +148,19 @@ - (void)onInjectedMenuItemClick:(NEMenuClickInfo *)clickInfo
         [_preVC presentViewController:_alert animated:YES completion:nil];
     }
 }
-- (void)updateMeetingBtnWithInfo:(NEMeetingInfo *)info {
-    NEMeetingStatus status = [[NEMeetingKit getInstance] getMeetingService].getMeetingStatus;
-    if (status != MEETING_STATUS_INMEETING_MINIMIZED) return;
-
-    NSLog(@"meetingNum: %@ meetingId: %llu", info.meetingNum, info.meetingId);
-    _restoreMeetingBtn.neTitle = info.subject;
-    int64_t interval = info.duration/1000;
-    if (interval > 0) {
-        _restoreMeetingBtn.startTime = interval;
-    }
-    _restoreMeetingBtn.hidden = NO;
-}
 
 - (void)onMeetingStatusChanged:(NEMeetingEvent *)event {
-    if (event.status == MEETING_STATUS_INMEETING_MINIMIZED) {
-        __weak typeof(self) weakSelf = self;
-        [[[NEMeetingKit getInstance] getMeetingService] getCurrentMeetingInfo:^(NSInteger resultCode, NSString * _Nonnull resultMsg, NEMeetingInfo * _Nonnull info) {
-            if (info) {
-                [weakSelf updateMeetingBtnWithInfo:info];
-            }
-        }];
-    }else{
-        if(event.status == MEETING_STATUS_DISCONNECTING && _preVC != nil){
-            [_preVC dismissViewControllerAnimated:YES completion:nil];
-        }
-        _restoreMeetingBtn.hidden = YES;
-        
-        if(event.status == MEETING_STATUS_DISCONNECTING){
-            NSString *toastString = [NSString stringWithFormat:@"onMeetingDisconnected: %@", [self stringifyDisconnectedReason: event.arg]];
-            [[UIApplication sharedApplication].keyWindow makeToast:toastString duration:2 position:CSToastPositionCenter];
-        }
+    if (event.status == MEETING_STATUS_DISCONNECTING && _preVC != nil) {
+        [_preVC dismissViewControllerAnimated:YES completion:nil];
+    }
+    
+    if (event.status == MEETING_STATUS_DISCONNECTING) {
+        NSString *toastString = [NSString stringWithFormat:@"onMeetingDisconnected: %@", [self stringifyDisconnectedReason: event.arg]];
+        [[UIApplication sharedApplication].keyWindow makeToast:toastString duration:2 position:CSToastPositionCenter];
     }
 }
 
-- (NSString *) stringifyDisconnectedReason:(NSInteger)disconnectCode {
+- (NSString *)stringifyDisconnectedReason:(NSInteger)disconnectCode {
     switch (disconnectCode) {
         case MEETING_DISCONNECTING_BY_HOST:
              return @"remove_by_host";
@@ -249,15 +191,5 @@ - (NSString *) stringifyDisconnectedReason:(NSInteger)disconnectCode {
     }
 }
 
-- (UIButton *)restoreMeetingBtn {
-    if (!_restoreMeetingBtn) {
-        _restoreMeetingBtn = [TimerButton buttonWithType:UIButtonTypeCustom];
-        _restoreMeetingBtn.hidden = YES;
-        [_restoreMeetingBtn addTarget:self
-                               action:@selector(onRestoreMeetingAction:)
-                     forControlEvents:UIControlEventTouchUpInside];
-    }
-    return _restoreMeetingBtn;
-}
 
 @end
diff --git a/SampleCode/iOS/NEMeetingDemo/Section/MeetingConfigEnum.h b/SampleCode/iOS/NEMeetingDemo/Section/MeetingConfigEnum.h
index 38567b81..70240b52 100644
--- a/SampleCode/iOS/NEMeetingDemo/Section/MeetingConfigEnum.h
+++ b/SampleCode/iOS/NEMeetingDemo/Section/MeetingConfigEnum.h
@@ -39,7 +39,8 @@ typedef NS_ENUM(NSInteger, MeetingSettingType) {
   MeetingSettingTypeEnableFrontCameraMirror,
   MeetingSettingTypeShowFloatingMicrophone,
   MeetingSettingTypeJoinOffLive,
-  MeetingSettingTypeEnabeAudioShare
+  MeetingSettingTypeEnabeAudioShare,
+  MeetingSettingTypeEnableEncryption
 };
 
 /// 创建会议设置选项类型
@@ -75,7 +76,8 @@ typedef NS_ENUM(NSInteger, CreateMeetingSettingType) {
   CreateMeetingSettingTypeEnableFrontCameraMirror,
   CreateMeetingSettingTypeShowFloatingMicrophone,
   CreateMeetingSettingTypeJoinOffLive,
-  CreateMeetingSettingTypeEnabeAudioShare
+  CreateMeetingSettingTypeEnabeAudioShare,
+  CreateMeetingSettingTypeEnableEncryption
 };
 
 #endif /* MeetingConfigEnum_h */
diff --git a/SampleCode/iOS/NEMeetingDemo/Section/StartMeetingVC.m b/SampleCode/iOS/NEMeetingDemo/Section/StartMeetingVC.m
index 5fffb206..19cca121 100644
--- a/SampleCode/iOS/NEMeetingDemo/Section/StartMeetingVC.m
+++ b/SampleCode/iOS/NEMeetingDemo/Section/StartMeetingVC.m
@@ -35,6 +35,7 @@ @interface StartMeetingVC () <CheckBoxDelegate, MeetingMenuSelectVCDelegate, Mee
 @property(weak, nonatomic) IBOutlet UITextField *passwordInput;
 /// 会议主题输入框
 @property(weak, nonatomic) IBOutlet UITextField *subjectInput;
+@property (strong, nonatomic) IBOutlet UITextField *encryptionKeyInput;
 
 @property(nonatomic, copy) NSString *meetingNum;
 @property(nonatomic, assign) BOOL audioOffAllowSelfOn;
@@ -82,7 +83,8 @@ - (void)setupUI {
     @"显示会议结束提醒",   @"聊天室文件消息",     @"聊天室图片消息",
     @"开启静音检测",       @"关闭静音包",         @"显示屏幕共享者画面",
     @"显示白板共享者画面", @"设置白板透明",   @"前置摄像头镜像",
-    @"显示麦克风浮窗",  @"入会时隐藏直播菜单", @"开启音频共享"
+    @"显示麦克风浮窗",  @"入会时隐藏直播菜单", @"开启音频共享",
+    @"开启加密"
   ]];
   _settingCheckBox.delegate = self;
   [self.settingCheckBox setItemSelected:YES index:CreateMeetingSettingTypeChatroomEnableFile];
@@ -131,6 +133,13 @@ - (void)doStartMeeting {
   params.extraData = _extraInput.text.length ? _extraInput.text : nil;
   // 会议主题
   params.subject = _subjectInput.text;
+  // 是否开启媒体流加密
+  if ([self selectedSetting:CreateMeetingSettingTypeEnableEncryption]) {
+    NEEncryptionConfig *encryptionConfig = [[NEEncryptionConfig alloc] init];
+    encryptionConfig.encryptionMode = GMCryptoSM4ECB;
+    encryptionConfig.encryptKey = _encryptionKeyInput.text;
+    params.encryptionConfig = encryptionConfig;
+  }
   // 联席主持人配置
   if (_coHostInput.text.length) {
     NSString *cohostText = _coHostInput.text;
diff --git a/SampleCode/iOS/NEMeetingDemo/Section/StartMeetingVC.xib b/SampleCode/iOS/NEMeetingDemo/Section/StartMeetingVC.xib
index af7a4463..50fed7be 100644
--- a/SampleCode/iOS/NEMeetingDemo/Section/StartMeetingVC.xib
+++ b/SampleCode/iOS/NEMeetingDemo/Section/StartMeetingVC.xib
@@ -13,6 +13,7 @@
             <connections>
                 <outlet property="coHostInput" destination="4rM-kd-1UT" id="Y1J-MO-yoU"/>
                 <outlet property="configCheckBox" destination="F15-my-g2s" id="xa1-Ng-qar"/>
+                <outlet property="encryptionKeyInput" destination="vTj-7n-oc5" id="SWT-v9-xWz"/>
                 <outlet property="extraInput" destination="s17-VQ-gVv" id="wak-lf-rd7"/>
                 <outlet property="meetingIdInput" destination="Jfc-T7-66b" id="nLq-kn-RQA"/>
                 <outlet property="nickInput" destination="7cy-0b-BqG" id="Oip-dc-DvA"/>
@@ -155,6 +156,21 @@
                         <action selector="doCloseMeeting:" destination="-1" eventType="touchUpInside" id="ach-E7-Ui0"/>
                     </connections>
                 </button>
+                <textField opaque="NO" contentMode="scaleToFill" horizontalHuggingPriority="248" contentHorizontalAlignment="left" contentVerticalAlignment="center" placeholder="媒体流加密秘钥" textAlignment="natural" minimumFontSize="17" translatesAutoresizingMaskIntoConstraints="NO" id="vTj-7n-oc5">
+                    <rect key="frame" x="16" y="592" width="382" height="32"/>
+                    <constraints>
+                        <constraint firstAttribute="height" constant="32" id="alM-65-Gd6"/>
+                    </constraints>
+                    <fontDescription key="fontDescription" type="system" pointSize="14"/>
+                    <textInputTraits key="textInputTraits"/>
+                </textField>
+                <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="LRk-s0-ltQ">
+                    <rect key="frame" x="16" y="632" width="382" height="1"/>
+                    <color key="backgroundColor" white="0.66666666666666663" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                    <constraints>
+                        <constraint firstAttribute="height" constant="1" id="FKl-ma-t58"/>
+                    </constraints>
+                </view>
             </subviews>
             <viewLayoutGuide key="safeArea" id="Q5M-cg-NOt"/>
             <color key="backgroundColor" systemColor="systemBackgroundColor"/>
@@ -165,6 +181,7 @@
                 <constraint firstItem="3e7-LZ-R6s" firstAttribute="width" secondItem="OwW-lk-i1Y" secondAttribute="width" multiplier="0.894737" id="4B9-Hl-uS5"/>
                 <constraint firstItem="WRG-Pt-POL" firstAttribute="top" secondItem="MKt-2h-9Ht" secondAttribute="bottom" constant="15" id="6CD-PL-CK4"/>
                 <constraint firstItem="0AT-Vn-itT" firstAttribute="width" secondItem="9kc-hk-n8f" secondAttribute="width" id="8xb-5o-leS"/>
+                <constraint firstItem="vTj-7n-oc5" firstAttribute="leading" secondItem="Q5M-cg-NOt" secondAttribute="leading" constant="16" id="BaY-AE-w4R"/>
                 <constraint firstItem="Jdc-RQ-DhW" firstAttribute="top" secondItem="WRG-Pt-POL" secondAttribute="top" id="C99-vp-DoD"/>
                 <constraint firstItem="s17-VQ-gVv" firstAttribute="bottom" secondItem="4rM-kd-1UT" secondAttribute="bottom" id="F1c-n0-5mo"/>
                 <constraint firstItem="CTz-SU-8uc" firstAttribute="leading" secondItem="7cy-0b-BqG" secondAttribute="leading" id="Fzn-pR-QSq"/>
@@ -182,12 +199,15 @@
                 <constraint firstItem="s17-VQ-gVv" firstAttribute="leading" secondItem="Q5M-cg-NOt" secondAttribute="leading" constant="10" id="QkH-tg-bJ1"/>
                 <constraint firstItem="OwW-lk-i1Y" firstAttribute="leading" secondItem="3e7-LZ-R6s" secondAttribute="trailing" constant="10" id="R4A-yi-fWq"/>
                 <constraint firstItem="CTz-SU-8uc" firstAttribute="trailing" secondItem="7cy-0b-BqG" secondAttribute="trailing" id="RDW-5l-4wV"/>
+                <constraint firstItem="vTj-7n-oc5" firstAttribute="top" secondItem="WRG-Pt-POL" secondAttribute="bottom" constant="16" id="RI4-ZZ-iUS"/>
                 <constraint firstItem="0AT-Vn-itT" firstAttribute="leading" secondItem="9kc-hk-n8f" secondAttribute="trailing" id="SJX-Yb-OH0"/>
                 <constraint firstItem="Q5M-cg-NOt" firstAttribute="trailing" secondItem="4rM-kd-1UT" secondAttribute="trailing" constant="10" id="UNn-iq-W3B"/>
+                <constraint firstItem="LRk-s0-ltQ" firstAttribute="leading" secondItem="Q5M-cg-NOt" secondAttribute="leading" constant="16" id="Uhe-e0-KCH"/>
                 <constraint firstItem="7cy-0b-BqG" firstAttribute="leading" secondItem="Jfc-T7-66b" secondAttribute="leading" id="WOb-2X-plc"/>
                 <constraint firstItem="7cy-0b-BqG" firstAttribute="trailing" secondItem="Jfc-T7-66b" secondAttribute="trailing" id="WOq-HL-5a8"/>
                 <constraint firstItem="3e7-LZ-R6s" firstAttribute="leading" secondItem="Q5M-cg-NOt" secondAttribute="leading" constant="10" id="WcW-Ff-sb9"/>
                 <constraint firstItem="0AT-Vn-itT" firstAttribute="trailing" secondItem="7cy-0b-BqG" secondAttribute="trailing" id="ajA-ol-QQg"/>
+                <constraint firstItem="Q5M-cg-NOt" firstAttribute="trailing" secondItem="vTj-7n-oc5" secondAttribute="trailing" constant="16" id="amH-jT-uU0"/>
                 <constraint firstItem="Jdc-RQ-DhW" firstAttribute="bottom" secondItem="WRG-Pt-POL" secondAttribute="bottom" id="asF-qa-vai"/>
                 <constraint firstItem="ccp-Zb-V9e" firstAttribute="leading" secondItem="0AT-Vn-itT" secondAttribute="leading" id="c61-8Y-FvF"/>
                 <constraint firstItem="MKt-2h-9Ht" firstAttribute="leading" secondItem="F15-my-g2s" secondAttribute="leading" id="dWs-yz-PuP"/>
@@ -198,6 +218,7 @@
                 <constraint firstItem="WRG-Pt-POL" firstAttribute="leading" secondItem="Q5M-cg-NOt" secondAttribute="leading" constant="20" id="lZY-Xe-ghe"/>
                 <constraint firstItem="F15-my-g2s" firstAttribute="leading" secondItem="7cy-0b-BqG" secondAttribute="leading" id="lsS-c5-wQ5"/>
                 <constraint firstItem="Jdc-RQ-DhW" firstAttribute="leading" secondItem="WRG-Pt-POL" secondAttribute="trailing" constant="40" id="nxF-3B-Lme"/>
+                <constraint firstItem="LRk-s0-ltQ" firstAttribute="top" secondItem="vTj-7n-oc5" secondAttribute="bottom" constant="8" symbolic="YES" id="oJa-kP-Ykd"/>
                 <constraint firstItem="Q5M-cg-NOt" firstAttribute="bottom" secondItem="s17-VQ-gVv" secondAttribute="bottom" constant="10" id="qMW-6D-zz0"/>
                 <constraint firstItem="9kc-hk-n8f" firstAttribute="leading" secondItem="7cy-0b-BqG" secondAttribute="leading" id="qXr-ys-CPU"/>
                 <constraint firstItem="afo-Xb-gX8" firstAttribute="top" secondItem="Q5M-cg-NOt" secondAttribute="top" constant="16" id="r2m-g2-Aw3"/>
@@ -210,6 +231,7 @@
                 <constraint firstItem="mEx-5R-qub" firstAttribute="top" secondItem="Jfc-T7-66b" secondAttribute="bottom" constant="4" id="yYn-vg-C7y"/>
                 <constraint firstItem="Q5M-cg-NOt" firstAttribute="trailing" secondItem="Jfc-T7-66b" secondAttribute="trailing" constant="16" id="z72-VA-eAO"/>
                 <constraint firstItem="4rM-kd-1UT" firstAttribute="leading" secondItem="s17-VQ-gVv" secondAttribute="trailing" constant="10" id="zD1-OT-tOS"/>
+                <constraint firstItem="Q5M-cg-NOt" firstAttribute="trailing" secondItem="LRk-s0-ltQ" secondAttribute="trailing" constant="16" id="zce-9l-utJ"/>
                 <constraint firstItem="3e7-LZ-R6s" firstAttribute="bottom" secondItem="OwW-lk-i1Y" secondAttribute="bottom" id="zkL-4g-otg"/>
             </constraints>
             <point key="canvasLocation" x="131.8840579710145" y="153.34821428571428"/>
diff --git a/SampleCode/iOS/Podfile b/SampleCode/iOS/Podfile
index aa5caec1..f421993a 100644
--- a/SampleCode/iOS/Podfile
+++ b/SampleCode/iOS/Podfile
@@ -12,6 +12,6 @@ target 'NEMeetingDemo' do
   pod 'Masonry', '~> 1.1.0'
   pod 'Reachability'
   
-  pod 'NEMeetingKit', '~> 3.15.0'
+  pod 'NEMeetingKit', '~> 3.16.1'
 end