diff --git a/src/triggers/line/message/index.js b/src/triggers/line/message/index.js
index 02ce7fa..84abd01 100644
--- a/src/triggers/line/message/index.js
+++ b/src/triggers/line/message/index.js
@@ -25,8 +25,6 @@ module.exports = async (event) => {
         text: messageText,
     } = message;
 
-    const sourceId = whereSentMessageEvent(event);
-
     let requestContent = messageText;
     if (sourceType !== "user" && !requestContent.startsWith(prefix)) {
         return;
@@ -35,6 +33,11 @@ module.exports = async (event) => {
         requestContent = requestContent.slice(prefix.length).trim();
     }
 
+    const sourceId = whereSentMessageEvent(event);
+    if (sourceType === "user") {
+        await client.showLoadingAnimation({chatId: sourceId});
+    }
+
     if (!requestContent) {
         await client.replyMessage({
             replyToken,