diff --git a/event-service/src/main/java/com/kt/event/eventservice/application/dto/kafka/EventCreatedMessage.java b/event-service/src/main/java/com/kt/event/eventservice/application/dto/kafka/EventCreatedMessage.java
index d971374..75560c0 100644
--- a/event-service/src/main/java/com/kt/event/eventservice/application/dto/kafka/EventCreatedMessage.java
+++ b/event-service/src/main/java/com/kt/event/eventservice/application/dto/kafka/EventCreatedMessage.java
@@ -7,6 +7,7 @@ import lombok.Data;
 import lombok.NoArgsConstructor;
 
 import java.time.LocalDateTime;
+import java.util.UUID;
 
 /**
  * 이벤트 생성 완료 메시지 DTO
@@ -20,16 +21,16 @@ import java.time.LocalDateTime;
 public class EventCreatedMessage {
 
     /**
-     * 이벤트 ID
+     * 이벤트 ID (UUID)
      */
     @JsonProperty("event_id")
-    private Long eventId;
+    private UUID eventId;
 
     /**
-     * 사용자 ID
+     * 사용자 ID (UUID)
      */
     @JsonProperty("user_id")
-    private Long userId;
+    private UUID userId;
 
     /**
      * 이벤트 제목
diff --git a/event-service/src/main/java/com/kt/event/eventservice/infrastructure/kafka/EventKafkaProducer.java b/event-service/src/main/java/com/kt/event/eventservice/infrastructure/kafka/EventKafkaProducer.java
index a409831..4f21e6c 100644
--- a/event-service/src/main/java/com/kt/event/eventservice/infrastructure/kafka/EventKafkaProducer.java
+++ b/event-service/src/main/java/com/kt/event/eventservice/infrastructure/kafka/EventKafkaProducer.java
@@ -29,12 +29,12 @@ public class EventKafkaProducer {
     /**
      * 이벤트 생성 완료 메시지 발행
      *
-     * @param eventId 이벤트 ID
-     * @param userId 사용자 ID
+     * @param eventId 이벤트 ID (UUID)
+     * @param userId 사용자 ID (UUID)
      * @param title 이벤트 제목
      * @param eventType 이벤트 타입
      */
-    public void publishEventCreated(Long eventId, Long userId, String title, String eventType) {
+    public void publishEventCreated(java.util.UUID eventId, java.util.UUID userId, String title, String eventType) {
         EventCreatedMessage message = EventCreatedMessage.builder()
             .eventId(eventId)
             .userId(userId)