diff --git a/service/gateway/gateway_http_service.go b/service/gateway/gateway_http_service.go
index 0ad2635..9df0638 100644
--- a/service/gateway/gateway_http_service.go
+++ b/service/gateway/gateway_http_service.go
@@ -257,7 +257,9 @@ func DeductBalance(ctx context.Context, tenantId uint64, amount float64) error {
 
 // TenantSurplusResp 租户余额返回
 type TenantSurplusResp struct {
-	Surplus float64 `json:"surplus"`
+	Tenant struct {
+		Surplus float64 `json:"surplus"`
+	} `json:"tenant"`
 }
 
 // GetTenantSurplus 获取租户余额
@@ -278,7 +280,7 @@ func GetTenantSurplus(ctx context.Context, tenantId uint64) (float64, error) {
 		g.Log().Warningf(ctx, "[获取余额] 失败 tenantId=%d err=%v", tenantId, err)
 		return 0, err
 	}
-	return resp.Surplus, nil
+	return resp.Tenant.Surplus, nil
 }
 
 //// callback 向回调地址 POST 任务结果（与查询接口 GetTaskRes 出参一致）
diff --git a/service/task/worker.go b/service/task/worker.go
index 79d7b2e..6146cb7 100644
--- a/service/task/worker.go
+++ b/service/task/worker.go
@@ -50,7 +50,7 @@ func (w *asyncWorker) handleOne(ctx context.Context, task *entity.ModelGatewayTa
 		w.failTask(ctx, task, startTime, "租户余额不足")
 		return
 	}
-	g.Log().Infof(ctx, "[handleOne] 当前余额 tenantId=%d surplus=%.2f", task.TenantId, surplus)
+	g.Log().Infof(ctx, "[handleOne] 当前余额 tenantId=%d surplus=%.2f", model.TenantId, surplus)
 
 	// ============================================
 	// 2) 调用模型
@@ -127,7 +127,7 @@ func (w *asyncWorker) handleOne(ctx context.Context, task *entity.ModelGatewayTa
 			task.BillingData[0] = billingResult
 			totalFee := gconv.Float64(billingResult["total_fee"])
 			if totalFee > 0 {
-				_ = gateway.DeductBalance(util.AsyncCtx(ctx), task.TenantId, -totalFee)
+				_ = gateway.DeductBalance(util.AsyncCtx(ctx), model.TenantId, -totalFee)
 			}
 		}
 	}