diff --git a/backend/services/reward-service/src/infrastructure/external/wallet-service/wallet-service.client.ts b/backend/services/reward-service/src/infrastructure/external/wallet-service/wallet-service.client.ts
index 9b0fafc8..084d5bf2 100644
--- a/backend/services/reward-service/src/infrastructure/external/wallet-service/wallet-service.client.ts
+++ b/backend/services/reward-service/src/infrastructure/external/wallet-service/wallet-service.client.ts
@@ -133,6 +133,19 @@ export class WalletServiceClient {
         };
       }
 
+      // wallet-service 使用全局 TransformInterceptor，响应格式为:
+      // { success: true, data: { success: boolean, ... }, timestamp: "..." }
+      const response_data = await response.json();
+      const data = response_data.data || response_data;
+
+      if (data.success !== true) {
+        this.logger.error(`Confirm deduction failed for order ${params.orderId}: ${data.error || 'Unknown error'}`);
+        return {
+          success: false,
+          error: data.error || 'Confirm deduction failed',
+        };
+      }
+
       this.logger.log(`Successfully confirmed deduction for order ${params.orderId}`);
       return { success: true };
     } catch (error) {
@@ -181,14 +194,25 @@ export class WalletServiceClient {
         };
       }
 
-      const data = await response.json();
+      const response_data = await response.json();
+      // wallet-service 使用全局 TransformInterceptor，响应格式为:
+      // { success: true, data: { success: boolean, ... }, timestamp: "..." }
+      const data = response_data.data || response_data;
+
+      if (data.success !== true) {
+        this.logger.error(`Settlement failed for ${params.accountSequence}: ${data.error || 'Unknown error'}`);
+        return {
+          success: false,
+          error: data.error || 'Settlement failed',
+        };
+      }
+
       this.logger.log(`Successfully settled to balance for ${params.accountSequence}`);
       return {
-        success: data.success,
+        success: true,
         settlementId: data.settlementId,
         settledAmount: data.settledAmount,
         balanceAfter: data.balanceAfter,
-        error: data.error,
       };
     } catch (error) {
       this.logger.error(`Error settling to balance for ${params.accountSequence}:`, error);
@@ -224,6 +248,19 @@ export class WalletServiceClient {
         };
       }
 
+      // wallet-service 使用全局 TransformInterceptor，响应格式为:
+      // { success: true, data: { success: boolean, ... }, timestamp: "..." }
+      const response_data = await response.json();
+      const data = response_data.data || response_data;
+
+      if (data.success !== true) {
+        this.logger.error(`Allocate funds failed for order ${request.orderId}: ${data.error || 'Unknown error'}`);
+        return {
+          success: false,
+          error: data.error || 'Allocate funds failed',
+        };
+      }
+
       this.logger.log(`Successfully allocated funds for order ${request.orderId}`);
       return { success: true };
     } catch (error) {