diff --git a/backend/services/identity-service/src/application/services/user-application.service.ts b/backend/services/identity-service/src/application/services/user-application.service.ts
index 0fc49254..22cb92ed 100644
--- a/backend/services/identity-service/src/application/services/user-application.service.ts
+++ b/backend/services/identity-service/src/application/services/user-application.service.ts
@@ -512,6 +512,24 @@ export class UserApplicationService {
     await this.eventPublisher.publishAll(account.domainEvents);
     account.clearDomainEvents();
 
+    // 发布 MPC Keygen 请求事件 (触发后台生成钱包)
+    const sessionId = crypto.randomUUID();
+    await this.eventPublisher.publish(
+      new MpcKeygenRequestedEvent({
+        sessionId,
+        userId: account.userId.toString(),
+        accountSequence: account.accountSequence.value,
+        username: `user_${account.accountSequence.value}`,
+        threshold: 2,
+        totalParties: 3,
+        requireDelegate: true,
+      }),
+    );
+
+    this.logger.log(
+      `Account registered: sequence=${accountSequence.value}, phone=${phoneNumber.value}, MPC keygen requested`,
+    );
+
     const tokens = await this.tokenService.generateTokenPair({
       userId: account.userId.toString(),
       accountSequence: account.accountSequence.value,