diff --git a/app/src/main/java/com/kunfei/bookshelf/constant/AppConstant.java b/app/src/main/java/com/kunfei/bookshelf/constant/AppConstant.java
index 5894c0adfd..fd880746e9 100644
--- a/app/src/main/java/com/kunfei/bookshelf/constant/AppConstant.java
+++ b/app/src/main/java/com/kunfei/bookshelf/constant/AppConstant.java
@@ -29,6 +29,8 @@ public class AppConstant {
 
     public static final String DEFAULT_WEB_DAV_URL = "https://dav.jianguoyun.com/dav/";
 
+    public static final String DEFAULT_USER_AGENT = "Mozilla/5.0 (Windows NT 10.0; WOW64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3100.0 Safari/537.36";
+
     public static final Pattern JS_PATTERN = Pattern.compile("(<js>[\\w\\W]*?</js>|@js:[\\w\\W]*$)", Pattern.CASE_INSENSITIVE);
     public static final Pattern EXP_PATTERN = Pattern.compile("\\{\\{([\\w\\W]*?)\\}\\}");
 
diff --git a/app/src/main/java/com/kunfei/bookshelf/model/analyzeRule/AnalyzeHeaders.java b/app/src/main/java/com/kunfei/bookshelf/model/analyzeRule/AnalyzeHeaders.java
index 3e961e7ca4..6cd4fada7b 100644
--- a/app/src/main/java/com/kunfei/bookshelf/model/analyzeRule/AnalyzeHeaders.java
+++ b/app/src/main/java/com/kunfei/bookshelf/model/analyzeRule/AnalyzeHeaders.java
@@ -12,6 +12,7 @@
 import java.util.Map;
 
 import static android.text.TextUtils.isEmpty;
+import static com.kunfei.bookshelf.constant.AppConstant.DEFAULT_USER_AGENT;
 
 /**
  * Created by GKF on 2018/3/2.
@@ -38,7 +39,6 @@ public static Map<String, String> getMap(BookSourceBean bookSourceBean) {
     }
 
     private static String getDefaultUserAgent() {
-        return preferences.getString(MApplication.getInstance().getString(R.string.pk_user_agent),
-                MApplication.getInstance().getString(R.string.pv_user_agent));
+        return preferences.getString(MApplication.getInstance().getString(R.string.pk_user_agent), DEFAULT_USER_AGENT);
     }
 }
diff --git a/app/src/main/res/values/pref_key_value.xml b/app/src/main/res/values/pref_key_value.xml
index dd706603af..56b831905c 100644
--- a/app/src/main/res/values/pref_key_value.xml
+++ b/app/src/main/res/values/pref_key_value.xml
@@ -16,8 +16,6 @@
     <string name="icon_main">ic_launcher_round</string>
     <string name="icon_book">book_launcher_round</string>
 
-    <string name="pv_user_agent">Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.2357.134 Safari/537.36</string>
-
     <string name="source_rule_url">https://gedoor.github.io/MyBookshelf/sourcerule.html</string>
     <string name="this_github_url">https://github.com/gedoor/MyBookshelf</string>
     <string name="disclaimer_url">https://gedoor.github.io/MyBookshelf/disclaimer.html</string>