diff --git a/backend/services/planting-service/src/infrastructure/kafka/event-ack.controller.ts b/backend/services/planting-service/src/infrastructure/kafka/event-ack.controller.ts
index 991bba09..d2c12763 100644
--- a/backend/services/planting-service/src/infrastructure/kafka/event-ack.controller.ts
+++ b/backend/services/planting-service/src/infrastructure/kafka/event-ack.controller.ts
@@ -53,8 +53,11 @@ export class EventAckController {
 
     try {
       if (message.success) {
-        // 标记事件为已确认
-        const confirmed = await this.outboxRepository.markAsConfirmed(message.eventId);
+        // 标记事件为已确认（使用 eventId + eventType 精确匹配）
+        const confirmed = await this.outboxRepository.markAsConfirmed(
+          message.eventId,
+          message.eventType,
+        );
 
         if (confirmed) {
           this.logger.log(
@@ -62,7 +65,7 @@ export class EventAckController {
           );
         } else {
           this.logger.warn(
-            `[ACK] Event ${message.eventId} not found or already confirmed`,
+            `[ACK] Event ${message.eventId} (${message.eventType}) not found or already confirmed`,
           );
         }
       } else {
diff --git a/backend/services/planting-service/src/infrastructure/persistence/repositories/outbox.repository.ts b/backend/services/planting-service/src/infrastructure/persistence/repositories/outbox.repository.ts
index 5d17dee0..08e015c4 100644
--- a/backend/services/planting-service/src/infrastructure/persistence/repositories/outbox.repository.ts
+++ b/backend/services/planting-service/src/infrastructure/persistence/repositories/outbox.repository.ts
@@ -145,25 +145,32 @@ export class OutboxRepository {
   /**
    * 标记事件为已确认（消费方已成功处理）
    * B方案：收到消费方确认后调用
+   * 使用 aggregateId + eventType 组合精确匹配，避免误确认同一订单的其他事件
    */
-  async markAsConfirmed(eventId: string): Promise<boolean> {
-    // 通过 aggregateId + eventType 查找事件
+  async markAsConfirmed(eventId: string, eventType?: string): Promise<boolean> {
+    const whereClause: Prisma.OutboxEventWhereInput = {
+      aggregateId: eventId,
+      status: OutboxStatus.SENT,
+    };
+
+    // 如果提供了 eventType，则精确匹配
+    if (eventType) {
+      whereClause.eventType = eventType;
+    }
+
     const result = await this.prisma.outboxEvent.updateMany({
-      where: {
-        aggregateId: eventId,
-        status: OutboxStatus.SENT,
-      },
+      where: whereClause,
       data: {
         status: OutboxStatus.CONFIRMED,
       },
     });
 
     if (result.count > 0) {
-      this.logger.log(`[OUTBOX] ✓ Event ${eventId} confirmed by consumer`);
+      this.logger.log(`[OUTBOX] ✓ Event ${eventId} (${eventType || 'all types'}) confirmed by consumer`);
       return true;
     }
 
-    this.logger.warn(`[OUTBOX] Event ${eventId} not found or not in SENT status`);
+    this.logger.warn(`[OUTBOX] Event ${eventId} (${eventType || 'any'}) not found or not in SENT status`);
     return false;
   }