diff --git a/service/task/worker.go b/service/task/worker.go
index 580391c..036b9cd 100644
--- a/service/task/worker.go
+++ b/service/task/worker.go
@@ -18,6 +18,7 @@ import (
 	"time"
 
 	"gitea.redpowerfuture.com/red-future/common/beans"
+	"gitea.redpowerfuture.com/red-future/common/utils"
 	"github.com/gogf/gf/v2/encoding/gjson"
 	"github.com/gogf/gf/v2/frame/g"
 	"github.com/gogf/gf/v2/util/gconv"
@@ -123,7 +124,7 @@ func (w *asyncWorker) handleOne(ctx context.Context, task *entity.ModelGatewayTa
 	// 3) 处理提示词相关数据解析涵盖重试
 	// ============================================
 	if req.BuildType == public.BuildTypePrompt {
-		mapped, err = w.parseAndRetry(ctx, mapped, task, model, maxRetry)
+		mapped, err = w.parseAndRetry(ctx, mapped, model, task, maxRetry)
 		if err != nil {
 			task.TextResult = mapped
 			w.failTask(ctx, task, startTime, err.Error())
@@ -248,15 +249,28 @@ func NotifyAsyncResult(taskID string, result map[string]any, err error) {
 //}
 
 // parseAndRetry 解析模型返回结果，并重试
-func (w *asyncWorker) parseAndRetry(ctx context.Context, body map[string]any, task *entity.ModelGatewayTask, model *entity.ModelGatewayModel, maxRetry int) (map[string]any, error) {
+func (w *asyncWorker) parseAndRetry(ctx context.Context, body map[string]any, model *entity.ModelGatewayModel, task *entity.ModelGatewayTask, maxRetry int) (map[string]any, error) {
+	// 获取构建模型的必填字段
+	user, err := utils.GetUserInfo(ctx)
+	if err != nil {
+		return nil, err
+	}
+	buildModel, err := dao.ModelGatewayModels.Get(ctx, &entity.ModelGatewayModel{
+		SQLBaseDO: beans.SQLBaseDO{TenantId: user.TenantId, Creator: user.UserName},
+		ModelName: task.BuildModelName,
+	})
+	if err != nil {
+		return nil, err
+	}
+
 	var lastErr error
 	for attempt := 0; attempt <= maxRetry; attempt++ {
 		if attempt > 0 {
 			g.Log().Infof(ctx, "[执行任务][重试] JSON解析 第%d/%d次 taskId=%s", attempt, maxRetry, task.TaskID)
 		}
 
-		// 解析 + 校验
-		parsed, err := util.ParseAndValidate(body, model.RequiredFields)
+		// 解析 + 校验（用构建模型的 RequiredFields）
+		parsed, err := util.ParseAndValidate(body, buildModel.RequiredFields)
 		if err == nil {
 			return parsed, nil
 		}
@@ -279,7 +293,6 @@ func (w *asyncWorker) parseAndRetry(ctx context.Context, body map[string]any, ta
 			continue
 		}
 
-		// 响应映射
 		var rawResp map[string]any
 		if err := json.Unmarshal(rawData, &rawResp); err != nil {
 			g.Log().Warningf(ctx, "[执行任务][Unmarshal失败] taskId=%s err=%v", task.TaskID, err)
@@ -291,20 +304,17 @@ func (w *asyncWorker) parseAndRetry(ctx context.Context, body map[string]any, ta
 			continue
 		}
 
-		// parseAndRetry 重试时
-		if len(model.BillingConfig) > 0 {
-			requestData := task.BillingData[0] // 请求数据从第一个元素取
-
+		// 计费
+		if len(model.BillingConfig) > 0 && len(task.BillingData) > 0 {
+			requestData := task.BillingData[0]
 			retryData := make(map[string]any)
 			for k, v := range requestData {
 				retryData[k] = v
 			}
-
 			responseData := util.ExtractResponseBilling(model.BillingConfig, mapped)
 			for k, v := range responseData {
 				retryData[k] = v
 			}
-
 			billingResult := util.CalculateBilling(model.BillingConfig, retryData)
 			if billingResult != nil {
 				task.BillingData = append(task.BillingData, billingResult)