diff --git a/app/src/main/java/xyz/fycz/myreader/greendao/entity/Book.java b/app/src/main/java/xyz/fycz/myreader/greendao/entity/Book.java
index e6909fb..0379bd4 100644
--- a/app/src/main/java/xyz/fycz/myreader/greendao/entity/Book.java
+++ b/app/src/main/java/xyz/fycz/myreader/greendao/entity/Book.java
@@ -413,4 +413,10 @@ public class Book implements Serializable {
         }
         return catheMap.get(key);
     }
+
+    public void clearCathe(){
+        if (catheMap != null) {
+            catheMap.clear();
+        }
+    }
 }
diff --git a/app/src/main/java/xyz/fycz/myreader/ui/activity/BookDetailedActivity.java b/app/src/main/java/xyz/fycz/myreader/ui/activity/BookDetailedActivity.java
index d8bbce5..920908c 100644
--- a/app/src/main/java/xyz/fycz/myreader/ui/activity/BookDetailedActivity.java
+++ b/app/src/main/java/xyz/fycz/myreader/ui/activity/BookDetailedActivity.java
@@ -264,8 +264,10 @@ public class BookDetailedActivity extends BaseActivity {
         //换源对话框
         mSourceDialog.setOnSourceChangeListener((bean, pos) -> {
             Book bookTem = (Book) mBook.clone();
+            bookTem.clearCathe();
             bookTem.setChapterUrl(bean.getChapterUrl());
             bookTem.setInfoUrl(bean.getInfoUrl());
+            bookTem.setSource(bean.getSource());
             if (!StringHelper.isEmpty(bean.getImgUrl())) {
                 bookTem.setImgUrl(bean.getImgUrl());
             }
@@ -284,7 +286,6 @@ public class BookDetailedActivity extends BaseActivity {
             if (!StringHelper.isEmpty(bean.getStatus())) {
                 bookTem.setStatus(bean.getStatus());
             }
-            bookTem.setSource(bean.getSource());
             if (isCollected) {
                 mBookService.updateBook(mBook, bookTem);
             }
diff --git a/app/src/main/java/xyz/fycz/myreader/ui/activity/ReadActivity.java b/app/src/main/java/xyz/fycz/myreader/ui/activity/ReadActivity.java
index f736b91..3280529 100644
--- a/app/src/main/java/xyz/fycz/myreader/ui/activity/ReadActivity.java
+++ b/app/src/main/java/xyz/fycz/myreader/ui/activity/ReadActivity.java
@@ -479,6 +479,7 @@ public class ReadActivity extends BaseActivity implements ColorPickerDialogListe
 
         mSourceDialog.setOnSourceChangeListener((bean, pos) -> {
             Book bookTem = (Book) mBook.clone();
+            bookTem.clearCathe();
             bookTem.setInfoUrl(bean.getInfoUrl());
             bookTem.setChapterUrl(bean.getChapterUrl());
             bookTem.setSource(bean.getSource());
diff --git a/app/src/main/java/xyz/fycz/myreader/util/help/JsExtensions.java b/app/src/main/java/xyz/fycz/myreader/util/help/JsExtensions.java
index 5ce1fbe..f7dea3e 100644
--- a/app/src/main/java/xyz/fycz/myreader/util/help/JsExtensions.java
+++ b/app/src/main/java/xyz/fycz/myreader/util/help/JsExtensions.java
@@ -33,8 +33,6 @@ import xyz.fycz.myreader.util.utils.OkHttpUtils;
 import xyz.fycz.myreader.util.utils.StringUtils;
 
 @Keep
-
-
 @SuppressWarnings({"unused"})
 public interface JsExtensions {
     String TAG = JsExtensions.class.getSimpleName();