diff --git a/app/src/main/java/io/legado/app/data/dao/BookSourceDao.kt b/app/src/main/java/io/legado/app/data/dao/BookSourceDao.kt
index 0c8e4d65e..e1864eb5b 100644
--- a/app/src/main/java/io/legado/app/data/dao/BookSourceDao.kt
+++ b/app/src/main/java/io/legado/app/data/dao/BookSourceDao.kt
@@ -65,6 +65,9 @@ interface BookSourceDao {
     @Delete
     fun delete(vararg bookSource: BookSource)
 
+    @Query("delete from book_sources where bookSourceUrl = :key")
+    fun delete(key: String)
+
     @get:Query("select min(customOrder) from book_sources")
     val minOrder: Int
 
diff --git a/app/src/main/java/io/legado/app/ui/book/source/edit/BookSourceEditActivity.kt b/app/src/main/java/io/legado/app/ui/book/source/edit/BookSourceEditActivity.kt
index b1c659b9b..6362c947f 100644
--- a/app/src/main/java/io/legado/app/ui/book/source/edit/BookSourceEditActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/book/source/edit/BookSourceEditActivity.kt
@@ -225,7 +225,7 @@ class BookSourceEditActivity :
     }
 
     private fun getSource(): BookSource? {
-        val source = viewModel.sourceLiveData.value?.copy() ?: BookSource()
+        val source = viewModel.sourceLiveData.value ?: BookSource()
         source.enabled = cb_is_enable.isChecked
         source.enabledExplore = cb_is_enable_find.isChecked
         viewModel.sourceLiveData.value?.let {
diff --git a/app/src/main/java/io/legado/app/ui/book/source/edit/BookSourceEditViewModel.kt b/app/src/main/java/io/legado/app/ui/book/source/edit/BookSourceEditViewModel.kt
index 910c461a7..1202f74f2 100644
--- a/app/src/main/java/io/legado/app/ui/book/source/edit/BookSourceEditViewModel.kt
+++ b/app/src/main/java/io/legado/app/ui/book/source/edit/BookSourceEditViewModel.kt
@@ -12,26 +12,34 @@ import io.legado.app.help.storage.OldRule
 class BookSourceEditViewModel(application: Application) : BaseViewModel(application) {
 
     val sourceLiveData: MutableLiveData<BookSource> = MutableLiveData()
+    var oldSourceUrl: String? = null
 
-    fun setBookSource(key: String) {
+    fun setBookSource(key: String?) {
         execute {
-            App.db.bookSourceDao().getBookSource(key)?.let {
+            var source: BookSource? = null
+            if (key != null) {
+                source = App.db.bookSourceDao().getBookSource(key)
+            }
+            source?.let {
+                oldSourceUrl = it.bookSourceUrl
                 sourceLiveData.postValue(it)
+            } ?: let {
+                sourceLiveData.postValue(BookSource().apply {
+                    customOrder = App.db.bookSourceDao().maxOrder + 1
+                })
             }
         }
     }
 
     fun save(bookSource: BookSource, finally: (() -> Unit)? = null) {
         execute {
-            sourceLiveData.value?.let {
-                if (it.bookSourceUrl != bookSource.bookSourceUrl) {
+            oldSourceUrl?.let {
+                if (oldSourceUrl != bookSource.bookSourceUrl) {
                     App.db.bookSourceDao().delete(it)
                 }
-            } ?: let {
-                bookSource.customOrder = App.db.bookSourceDao().maxOrder + 1
             }
+            oldSourceUrl = bookSource.bookSourceUrl
             App.db.bookSourceDao().insert(bookSource)
-            sourceLiveData.postValue(bookSource)
         }.onFinally {
             finally?.let { it() }
         }