diff --git a/backend/services/mining-admin-service/src/infrastructure/kafka/cdc-consumer.service.ts b/backend/services/mining-admin-service/src/infrastructure/kafka/cdc-consumer.service.ts
index 9f0c7983..9186ef66 100644
--- a/backend/services/mining-admin-service/src/infrastructure/kafka/cdc-consumer.service.ts
+++ b/backend/services/mining-admin-service/src/infrastructure/kafka/cdc-consumer.service.ts
@@ -195,7 +195,11 @@ export class CdcConsumerService implements OnModuleInit, OnModuleDestroy {
   }
 
   private isServiceEvent(data: any): boolean {
-    return data.eventType && data.aggregateType;
+    // 支持两种格式：
+    // 1. 驼峰格式 (服务直接发布): eventType, aggregateType
+    // 2. 下划线格式 (Debezium outbox): event_type, aggregate_type
+    return (data.eventType && data.aggregateType) ||
+           (data.event_type && data.aggregate_type);
   }
 
   private async handleCdcEvent(
@@ -226,8 +230,10 @@ export class CdcConsumerService implements OnModuleInit, OnModuleDestroy {
     eventData: any,
     sequenceNum: bigint,
   ): Promise<void> {
+    // 规范化事件格式，支持 Debezium outbox 的下划线格式
+    const normalizedEvent = this.normalizeServiceEvent(eventData);
     const event: ServiceEvent = {
-      ...eventData,
+      ...normalizedEvent,
       sequenceNum,
     };
 
@@ -248,4 +254,30 @@ export class CdcConsumerService implements OnModuleInit, OnModuleDestroy {
       }
     }
   }
+
+  /**
+   * 规范化服务事件格式
+   * 将 Debezium outbox 的下划线格式转换为驼峰格式
+   */
+  private normalizeServiceEvent(data: any): Omit<ServiceEvent, 'sequenceNum'> {
+    // 如果已经是驼峰格式，直接返回
+    if (data.eventType && data.aggregateType) {
+      return data;
+    }
+
+    // Debezium outbox 格式转换
+    // 原始格式：{ event_type, aggregate_type, aggregate_id, payload (JSON string), ... }
+    const payload = typeof data.payload === 'string'
+      ? JSON.parse(data.payload)
+      : data.payload;
+
+    return {
+      id: String(data.id),
+      eventType: data.event_type,
+      aggregateType: data.aggregate_type,
+      aggregateId: data.aggregate_id,
+      payload,
+      createdAt: data.created_at ? new Date(data.created_at).toISOString() : new Date().toISOString(),
+    };
+  }
 }