diff --git a/backend/services/identity-service/src/infrastructure/external/kyc/aliyun-kyc.provider.ts b/backend/services/identity-service/src/infrastructure/external/kyc/aliyun-kyc.provider.ts
index ef4ae404..269ec2d9 100644
--- a/backend/services/identity-service/src/infrastructure/external/kyc/aliyun-kyc.provider.ts
+++ b/backend/services/identity-service/src/infrastructure/external/kyc/aliyun-kyc.provider.ts
@@ -127,12 +127,16 @@ export class AliyunKycProvider {
 
       // Mobile3MetaSimpleVerify 返回结果:
       // - Code: OK 表示请求成功
-      // - ResultObject.BizCode: 0 表示验证通过, 其他值表示验证失败
+      // - ResultObject.BizCode: 核验结果
+      //   - 1: 校验一致 (成功)
+      //   - 2: 校验不一致 (失败)
+      //   - 3: 查无记录 (失败)
       if (response.Code === 'OK' || response.Code === '200') {
         const bizCode = response.ResultObject?.BizCode;
         const isConsistent = response.ResultObject?.IsConsistent;
         const subCode = response.ResultObject?.SubCode;
-        const isMatch = isConsistent === '1' || bizCode === '0';
+        // BizCode === '1' 表示校验一致（成功）
+        const isMatch = bizCode === '1';
 
         this.logger.log(`[AliyunKYC] [Level1] ResultObject: BizCode=${bizCode}, IsConsistent=${isConsistent}, SubCode=${subCode}`);
 
@@ -171,16 +175,15 @@ export class AliyunKycProvider {
 
   /**
    * 映射手机号三要素核验错误码
+   * 阿里云 Mobile3MetaSimpleVerify 返回的 BizCode:
+   * - 1: 校验一致 (成功)
+   * - 2: 校验不一致 (失败)
+   * - 3: 查无记录 (失败)
    */
   private mapMobile3MetaErrorCode(bizCode: string): string {
     const errorMap: Record<string, string> = {
-      '1': '姓名与身份证号不匹配',
-      '2': '身份证号与手机号不匹配',
-      '3': '姓名与手机号不匹配',
-      '4': '三要素信息均不匹配',
-      '5': '无法查询到该手机号信息',
-      '6': '手机号已注销或停机',
-      '7': '查询失败，请稍后重试',
+      '2': '三要素信息校验不一致',
+      '3': '查无记录，请确认信息是否正确',
     };
     return errorMap[bizCode] || `验证失败 (错误码: ${bizCode})`;
   }