diff --git a/app/src/main/java/io/legado/app/data/entities/BaseSource.kt b/app/src/main/java/io/legado/app/data/entities/BaseSource.kt
index fed5ef9c2..d704cc957 100644
--- a/app/src/main/java/io/legado/app/data/entities/BaseSource.kt
+++ b/app/src/main/java/io/legado/app/data/entities/BaseSource.kt
@@ -120,6 +120,18 @@ interface BaseSource : JsExtensions {
         CacheManager.delete("userInfo_${getStoreUrl()}")
     }
 
+    fun setVariable(variable: String?) {
+        if (variable != null) {
+            CacheManager.put("sourceVariable_${getStoreUrl()}", variable)
+        } else {
+            CacheManager.delete("sourceVariable_${getStoreUrl()}")
+        }
+    }
+
+    fun getVariable(): String? {
+        return CacheManager.get("sourceVariable_${getStoreUrl()}")
+    }
+
     /**
      * 执行JS
      */
diff --git a/app/src/main/java/io/legado/app/ui/book/cache/CacheActivity.kt b/app/src/main/java/io/legado/app/ui/book/cache/CacheActivity.kt
index 9c0a2e4c3..b23f4e0b5 100644
--- a/app/src/main/java/io/legado/app/ui/book/cache/CacheActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/book/cache/CacheActivity.kt
@@ -302,10 +302,10 @@ class CacheActivity : VMBaseActivity<ActivityCacheBookBinding, CacheViewModel>()
     @SuppressLint("SetTextI18n")
     private fun alertExportFileName() {
         alert(R.string.export_file_name) {
+            setMessage("js内有name和author变量,返回书名")
             val alertBinding = DialogEditTextBinding.inflate(layoutInflater).apply {
                 editView.hint = "file name js"
                 editView.setText(AppConfig.bookExportFileName)
-                tvSummary.text = """使用js返回一个json结构,{"name":"xxx", "author":"yyy"}"""
             }
             customView { alertBinding.root }
             okButton {
diff --git a/app/src/main/java/io/legado/app/ui/book/info/BookInfoActivity.kt b/app/src/main/java/io/legado/app/ui/book/info/BookInfoActivity.kt
index a9a95113d..d6f4a8cc4 100644
--- a/app/src/main/java/io/legado/app/ui/book/info/BookInfoActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/book/info/BookInfoActivity.kt
@@ -21,6 +21,7 @@ import io.legado.app.data.appDb
 import io.legado.app.data.entities.Book
 import io.legado.app.data.entities.BookChapter
 import io.legado.app.databinding.ActivityBookInfoBinding
+import io.legado.app.databinding.DialogEditTextBinding
 import io.legado.app.help.BlurTransformation
 import io.legado.app.help.glide.ImageLoader
 import io.legado.app.lib.dialogs.alert
@@ -119,6 +120,8 @@ class BookInfoActivity :
             viewModel.bookData.value?.canUpdate ?: true
         menu.findItem(R.id.menu_login)?.isVisible =
             !viewModel.bookSource?.loginUrl.isNullOrBlank()
+        menu.findItem(R.id.menu_set_source_variable)?.isVisible =
+            viewModel.bookSource != null
         return super.onMenuOpened(featureId, menu)
     }
 
@@ -157,6 +160,7 @@ class BookInfoActivity :
                 }
             }
             R.id.menu_top -> viewModel.topBook()
+            R.id.menu_set_source_variable -> setSourceVariable()
             R.id.menu_copy_book_url -> viewModel.bookData.value?.bookUrl?.let {
                 sendToClip(it)
             } ?: toastOnUi(R.string.no_book)
@@ -309,6 +313,32 @@ class BookInfoActivity :
         }
     }
 
+    private fun setSourceVariable() {
+        launch {
+            val variable = withContext(IO) { viewModel.bookSource?.getVariable() }
+            alert(R.string.set_source_variable) {
+                setMessage("源变量可在js中通过source.getVariable()获取")
+                val alertBinding = DialogEditTextBinding.inflate(layoutInflater).apply {
+                    editView.hint = "source variable"
+                    editView.setText(variable)
+                }
+                customView { alertBinding.root }
+                okButton {
+                    launch(IO) {
+                        viewModel.bookSource?.setVariable(alertBinding.editView.text?.toString())
+                    }
+                }
+                cancelButton()
+                neutralButton(R.string.delete) {
+                    launch(IO) {
+                        viewModel.bookSource?.setVariable(null)
+                    }
+                }
+            }.show()
+        }
+
+    }
+
     @SuppressLint("InflateParams")
     private fun deleteBook() {
         viewModel.bookData.value?.let {
diff --git a/app/src/main/java/io/legado/app/ui/book/local/ImportBookActivity.kt b/app/src/main/java/io/legado/app/ui/book/local/ImportBookActivity.kt
index b47405be7..506de03fc 100644
--- a/app/src/main/java/io/legado/app/ui/book/local/ImportBookActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/book/local/ImportBookActivity.kt
@@ -281,6 +281,7 @@ class ImportBookActivity : VMBaseActivity<ActivityImportBookBinding, ImportBookV
 
     private fun alertImportFileName() {
         alert(R.string.import_file_name) {
+            setMessage("""使用js返回一个json结构,{"name":"xxx", "author":"yyy"}""")
             val alertBinding = DialogEditTextBinding.inflate(layoutInflater).apply {
                 editView.hint = "js"
                 editView.setText(AppConfig.bookImportFileName)
diff --git a/app/src/main/res/layout/dialog_edit_text.xml b/app/src/main/res/layout/dialog_edit_text.xml
index dc909bee7..c0666dbe6 100644
--- a/app/src/main/res/layout/dialog_edit_text.xml
+++ b/app/src/main/res/layout/dialog_edit_text.xml
@@ -4,27 +4,13 @@
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:overScrollMode="ifContentScrolls"
-    android:paddingTop="12dp">
+    android:paddingLeft="16dp"
+    android:paddingRight="16dp">
 
-    <LinearLayout
+    <io.legado.app.ui.widget.text.AutoCompleteTextView
+        android:id="@+id/edit_view"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:orientation="vertical"
-        android:paddingLeft="20dp"
-        android:paddingRight="20dp">
-
-        <io.legado.app.ui.widget.text.AutoCompleteTextView
-            android:id="@+id/edit_view"
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            tools:ignore="SpeakableTextPresentCheck,TouchTargetSizeCheck" />
-
-        <TextView
-            android:id="@+id/tv_summary"
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:textColor="@color/secondaryText" />
-
-    </LinearLayout>
+        tools:ignore="SpeakableTextPresentCheck,TouchTargetSizeCheck" />
 
 </androidx.core.widget.NestedScrollView>
\ No newline at end of file
diff --git a/app/src/main/res/menu/book_info.xml b/app/src/main/res/menu/book_info.xml
index 370597f5c..37acb0fa3 100644
--- a/app/src/main/res/menu/book_info.xml
+++ b/app/src/main/res/menu/book_info.xml
@@ -29,6 +29,11 @@
         android:title="@string/to_top"
         app:showAsAction="never" />
 
+    <item
+        android:id="@+id/menu_set_source_variable"
+        android:title="@string/set_source_variable"
+        app:showAsAction="never" />
+
     <item
         android:id="@+id/menu_copy_book_url"
         android:title="@string/copy_book_url"
diff --git a/app/src/main/res/values-es-rES/strings.xml b/app/src/main/res/values-es-rES/strings.xml
index 64ceb8a66..131c3f1a5 100644
--- a/app/src/main/res/values-es-rES/strings.xml
+++ b/app/src/main/res/values-es-rES/strings.xml
@@ -872,4 +872,5 @@
     <string name="direct_link_upload_rule">直链上传规则</string>
     <string name="direct_link_upload_rule_summary">用于导出书源书单时生成直链url</string>
     <string name="copy_play_url">拷贝播放Url</string>
+    <string name="set_source_variable">设置源变量</string>
 </resources>
diff --git a/app/src/main/res/values-ja-rJP/strings.xml b/app/src/main/res/values-ja-rJP/strings.xml
index 8426607e0..572840413 100644
--- a/app/src/main/res/values-ja-rJP/strings.xml
+++ b/app/src/main/res/values-ja-rJP/strings.xml
@@ -872,4 +872,5 @@
     <string name="direct_link_upload_rule">直链上传规则</string>
     <string name="direct_link_upload_rule_summary">用于导出书源书单时生成直链url</string>
     <string name="copy_play_url">拷贝播放Url</string>
+    <string name="set_source_variable">设置源变量</string>
 </resources>
diff --git a/app/src/main/res/values-pt-rBR/strings.xml b/app/src/main/res/values-pt-rBR/strings.xml
index c3cf77417..93ad6d6b0 100644
--- a/app/src/main/res/values-pt-rBR/strings.xml
+++ b/app/src/main/res/values-pt-rBR/strings.xml
@@ -872,5 +872,6 @@
     <string name="direct_link_upload_rule">直链上传规则</string>
     <string name="direct_link_upload_rule_summary">用于导出书源书单时生成直链url</string>
     <string name="copy_play_url">拷贝播放Url</string>
+    <string name="set_source_variable">设置源变量</string>
 
 </resources>
diff --git a/app/src/main/res/values-zh-rHK/strings.xml b/app/src/main/res/values-zh-rHK/strings.xml
index 03165419b..f6f79fe01 100644
--- a/app/src/main/res/values-zh-rHK/strings.xml
+++ b/app/src/main/res/values-zh-rHK/strings.xml
@@ -869,5 +869,6 @@
     <string name="direct_link_upload_rule">直链上传规则</string>
     <string name="direct_link_upload_rule_summary">用于导出书源书单时生成直链url</string>
     <string name="copy_play_url">拷贝播放Url</string>
+    <string name="set_source_variable">设置源变量</string>
 
 </resources>
diff --git a/app/src/main/res/values-zh-rTW/strings.xml b/app/src/main/res/values-zh-rTW/strings.xml
index 91d8d023b..49f5841bc 100644
--- a/app/src/main/res/values-zh-rTW/strings.xml
+++ b/app/src/main/res/values-zh-rTW/strings.xml
@@ -870,5 +870,6 @@
     <string name="direct_link_upload_rule">直链上传规则</string>
     <string name="direct_link_upload_rule_summary">用于导出书源书单时生成直链url</string>
     <string name="copy_play_url">拷贝播放Url</string>
+    <string name="set_source_variable">设置源变量</string>
 
 </resources>
diff --git a/app/src/main/res/values-zh/strings.xml b/app/src/main/res/values-zh/strings.xml
index 634c13677..f32c7c762 100644
--- a/app/src/main/res/values-zh/strings.xml
+++ b/app/src/main/res/values-zh/strings.xml
@@ -871,5 +871,6 @@
     <string name="direct_link_upload_rule">直链上传规则</string>
     <string name="direct_link_upload_rule_summary">用于导出书源书单时生成直链url</string>
     <string name="copy_play_url">拷贝播放Url</string>
+    <string name="set_source_variable">设置源变量</string>
 
 </resources>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index a2dac3821..e437d54b9 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -872,5 +872,6 @@
     <string name="direct_link_upload_rule">直链上传规则</string>
     <string name="direct_link_upload_rule_summary">用于导出书源书单时生成直链url</string>
     <string name="copy_play_url">拷贝播放Url</string>
+    <string name="set_source_variable">设置源变量</string>
 
 </resources>