diff --git a/app/src/main/java/io/legado/app/web/socket/BookSourceDebugWebSocket.kt b/app/src/main/java/io/legado/app/web/socket/BookSourceDebugWebSocket.kt
index b98f0a45d..1e158399d 100644
--- a/app/src/main/java/io/legado/app/web/socket/BookSourceDebugWebSocket.kt
+++ b/app/src/main/java/io/legado/app/web/socket/BookSourceDebugWebSocket.kt
@@ -65,6 +65,10 @@ class BookSourceDebugWebSocket(handshakeRequest: NanoHTTPD.IHTTPSession) :
                         Debug.callback = this@BookSourceDebugWebSocket
                         Debug.startDebug(this, it, key)
                     }
+                } else {
+                    send("数据必须为Json格式")
+                    close(NanoWSD.WebSocketFrame.CloseCode.NormalClosure, "调试结束", false)
+                    return@launch
                 }
             }
         }
diff --git a/modules/web/src/api/index.js b/modules/web/src/api/index.js
index 207246f21..a743fba2d 100644
--- a/modules/web/src/api/index.js
+++ b/modules/web/src/api/index.js
@@ -98,7 +98,7 @@ const debug = (
   const socket = new WebSocket(url);
 
   socket.onopen = () => {
-    socket.send(`{"tag":"${sourceUrl}", "key":"${searchKey}"}`);
+    socket.send(JSON.stringify({ tag: sourceUrl, key: searchKey }));
   };
   socket.onmessage = ({ data }) => onReceive(data);