diff --git a/src/main/java/com/balybus/galaxy/chat/controller/ChatSocketController.java b/src/main/java/com/balybus/galaxy/chat/controller/ChatSocketController.java
index 250e6650..2ed34d88 100644
--- a/src/main/java/com/balybus/galaxy/chat/controller/ChatSocketController.java
+++ b/src/main/java/com/balybus/galaxy/chat/controller/ChatSocketController.java
@@ -35,10 +35,20 @@ public void sendPrivateMessage(ChatMsgRequestDto.SendPrivateMessage message, @He
         try {
             ChatMsgResponseDto.SendPrivateMessage responseDto = chatService.saveMessage(message, sender);   //채팅 데이터 DB 저장
             messagingTemplate.convertAndSendToUser(responseDto.getReceiverMail(), "/queue/private", responseDto); //받는사람에게 채팅 전송
-            messagingTemplate.convertAndSendToUser(sender, "/queue/success", "SUCCESS"); //보낸사람에게 채팅 전송 성공여부 전송
+            messagingTemplate.convertAndSendToUser(sender, "/queue/success",
+                    ChatMsgResponseDto.resultNotice.builder()
+                            .code(200)
+                            .msg("SUCCESS")
+                            .successSepCode(message.getSuccessSepCode())
+                            .build()); //보낸사람에게 채팅 전송 성공여부 전송
         } catch (Exception e) {
             // 예외가 발생한 경우 메시지를 보낸 사람에게 에러 메시지를 보냄
-            messagingTemplate.convertAndSendToUser(sender, "/queue/error", "Error occurred: " + e.getMessage());
+            messagingTemplate.convertAndSendToUser(sender, "/queue/error",
+                    ChatMsgResponseDto.resultNotice.builder()
+                        .code(400)
+                        .msg(e.getMessage())
+                        .successSepCode(message.getSuccessSepCode())
+                        .build());
         }
     }
 }
diff --git a/src/main/java/com/balybus/galaxy/chat/dto/ChatMsgRequestDto.java b/src/main/java/com/balybus/galaxy/chat/dto/ChatMsgRequestDto.java
index e4892d85..24ee21ef 100644
--- a/src/main/java/com/balybus/galaxy/chat/dto/ChatMsgRequestDto.java
+++ b/src/main/java/com/balybus/galaxy/chat/dto/ChatMsgRequestDto.java
@@ -9,6 +9,8 @@ public static class SendPrivateMessage {
         private Long receiverId;
         private Long patientLogId;
         private String content;
+
+        private String successSepCode;
     }
 
     @Data
diff --git a/src/main/java/com/balybus/galaxy/chat/dto/ChatMsgResponseDto.java b/src/main/java/com/balybus/galaxy/chat/dto/ChatMsgResponseDto.java
index 84ce3cc6..d5e3731f 100644
--- a/src/main/java/com/balybus/galaxy/chat/dto/ChatMsgResponseDto.java
+++ b/src/main/java/com/balybus/galaxy/chat/dto/ChatMsgResponseDto.java
@@ -7,6 +7,14 @@
 import java.util.List;
 
 public class ChatMsgResponseDto {
+    @Getter
+    @Builder
+    public static class resultNotice {
+        private int code;
+        private String msg;
+        private String successSepCode;
+    }
+
     @Getter
     @Builder
     public static class SendPrivateMessage {
diff --git a/src/main/resources/templates/chat/chatTestA.html b/src/main/resources/templates/chat/chatTestA.html
index 3cabcbfc..788eda53 100644
--- a/src/main/resources/templates/chat/chatTestA.html
+++ b/src/main/resources/templates/chat/chatTestA.html
@@ -68,8 +68,9 @@ <h1>WebSocket Test</h1>
                 const message = {
                     content: document.getElementById("textMsg").value,
                     senderId: chatSenderId, // 메시지를 보낼 사용자
-                    receiverId: document.getElementById("receiverId").value, // 메시지를 받을 사용자
-                    patientLogId: document.getElementById("patientId").value // 메시지를 환자
+                    receiverId: document.getElementById("receiverId").value,  // 메시지를 받을 사용자
+                    patientLogId: document.getElementById("patientId").value, // 메시지를 환자
+                    successSepCode: "123456789"
                 };
                 messageContainer.innerHTML += `<p>보낸 개인 메시지: ${message.content}</p>`;
                 stompClient.send("/app/private-message", {}, JSON.stringify(message)); // private-message 엔드포인트로 메시지 전송
diff --git a/src/main/resources/templates/chat/chatTestB.html b/src/main/resources/templates/chat/chatTestB.html
index 7e4d8efe..b291175d 100644
--- a/src/main/resources/templates/chat/chatTestB.html
+++ b/src/main/resources/templates/chat/chatTestB.html
@@ -69,7 +69,8 @@ <h1>WebSocket Test</h1>
                     content: document.getElementById("textMsg").value,
                     senderId: chatSenderId, // 메시지를 보낼 사용자
                     receiverId: document.getElementById("receiverId").value, // 메시지를 받을 사용자
-                    patientLogId: document.getElementById("patientId").value // 메시지를 환자
+                    patientLogId: document.getElementById("patientId").value, // 메시지를 환자
+                    successSepCode: "123456789"
                 };
                 messageContainer.innerHTML += `<p>보낸 개인 메시지: ${message.content}</p>`;
                 stompClient.send("/app/private-message", {}, JSON.stringify(message)); // private-message 엔드포인트로 메시지 전송