diff --git a/framework/ios/base/bridge/HippyBridge.h b/framework/ios/base/bridge/HippyBridge.h
index addcc0193e9..784e1ff3e71 100644
--- a/framework/ios/base/bridge/HippyBridge.h
+++ b/framework/ios/base/bridge/HippyBridge.h
@@ -214,7 +214,7 @@ HIPPY_EXTERN NSString *HippyBridgeModuleNameForClass(Class bridgeModuleClass);
 @property (nonatomic, copy, readonly) NSArray<NSURL *> *bundleURLs;
 
 /// Path of sandbox directory
-@property (nonatomic, strong) NSString *sandboxDirectory;
+@property (nonatomic, copy) NSString *sandboxDirectory;
 
 /// Shared data between different rootViews on same bridge.
 /// Set by HippyRootView when runHippyApplication.
diff --git a/framework/ios/base/bridge/HippyBridge.mm b/framework/ios/base/bridge/HippyBridge.mm
index 22e30951d91..62e8de82d4a 100644
--- a/framework/ios/base/bridge/HippyBridge.mm
+++ b/framework/ios/base/bridge/HippyBridge.mm
@@ -192,6 +192,7 @@ @interface HippyBridge() {
 
 @implementation HippyBridge
 
+@synthesize sandboxDirectory = _sandboxDirectory;
 @synthesize imageLoader = _imageLoader;
 @synthesize imageProviders = _imageProviders;
 @synthesize startTime = _startTime;
@@ -1218,11 +1219,19 @@ - (void)registerModuleForFrameUpdates:(id<HippyBridgeModule>)module withModuleDa
     [_displayLink registerModuleForFrameUpdates:module withModuleData:moduleData];
 }
 
+- (NSString *)sandboxDirectory {
+    @synchronized (self) {
+        return _sandboxDirectory;
+    }
+}
+
 - (void)setSandboxDirectory:(NSString *)sandboxDirectory {
-    if (![_sandboxDirectory isEqual:sandboxDirectory]) {
-        _sandboxDirectory = sandboxDirectory;
-        if (sandboxDirectory) {
-            [self.javaScriptExecutor setSandboxDirectory:sandboxDirectory];
+    @synchronized (self) {
+        if (![_sandboxDirectory isEqual:sandboxDirectory]) {
+            _sandboxDirectory = sandboxDirectory;
+            if (sandboxDirectory) {
+                [self.javaScriptExecutor setSandboxDirectory:sandboxDirectory];
+            }
         }
     }
 }
diff --git a/modules/vfs/ios/HippyFileHandler.h b/modules/vfs/ios/HippyFileHandler.h
index 5d306bc7f1b..3ca65ee4356 100644
--- a/modules/vfs/ios/HippyFileHandler.h
+++ b/modules/vfs/ios/HippyFileHandler.h
@@ -43,8 +43,8 @@ class HippyFileHandler : public VFSUriHandler {
     /// Convert relative addresses(such as hpfile://) to absolute paths
     /// - Parameters:
     ///   - hippyFileUrl: file url
-    ///   - hippySandboxDirectory: sandbox directory of hippy app
-    static NSURL *AbsoluteURLFromHippyFileURL(NSURL *hippyFileUrl, NSURL *hippySandboxDirectory);
+    ///   - bridge: HippyBridge, use to get sandbox url
+    static NSURL *AbsoluteURLFromHippyFileURL(NSURL *hippyFileUrl, HippyBridge *bridge);
 
     virtual void RequestUntrustedContent(NSURLRequest *request,
                                          NSDictionary *extraInfo,
diff --git a/modules/vfs/ios/HippyFileHandler.mm b/modules/vfs/ios/HippyFileHandler.mm
index f74be7b4218..cd308b70c49 100644
--- a/modules/vfs/ios/HippyFileHandler.mm
+++ b/modules/vfs/ios/HippyFileHandler.mm
@@ -41,7 +41,7 @@
     FOOTSTONE_UNIMPLEMENTED();
 }
 
-NSURL *HippyFileHandler::AbsoluteURLFromHippyFileURL(NSURL *fileUrl, NSURL *hippySandboxDirectory) {
+NSURL *HippyFileHandler::AbsoluteURLFromHippyFileURL(NSURL *fileUrl, HippyBridge *bridge) {
     static NSString *defaultHippyLocalFileURLPrefix = @"hpfile://";
     static NSString *hippyLocalRelativeFilePathPrefix = @"./";
     static NSString *hippyLocalAppBundleFilePathPrefix = @"appbundle/";
@@ -55,6 +55,7 @@
         if ([path hasPrefix:hippyLocalRelativeFilePathPrefix]) {
             // Hippy Sandbox Relative Path
             NSString *relativePath = [path substringFromIndex:hippyLocalRelativeFilePathPrefix.length];
+            NSURL *hippySandboxDirectory = [NSURL URLWithString:bridge.sandboxDirectory];
             absoluteURL = [NSURL fileURLWithPath:relativePath relativeToURL:hippySandboxDirectory];
         } else if ([path hasPrefix:hippyLocalAppBundleFilePathPrefix]) {
             // App Bundle Path
@@ -90,7 +91,7 @@
         return;
     }
     
-    NSURL *absoluteURL = AbsoluteURLFromHippyFileURL(url, [NSURL URLWithString:bridge.sandboxDirectory]);
+    NSURL *absoluteURL = AbsoluteURLFromHippyFileURL(url, bridge);
     if ([absoluteURL isFileURL] || [absoluteURL isFileReferenceURL]) {
         void (^opBlock)() = ^{
             NSError *error;