diff --git a/features/lm/file_export/controller.go b/features/lm/file_export/controller.go
index 22374b5e..5fba6abb 100644
--- a/features/lm/file_export/controller.go
+++ b/features/lm/file_export/controller.go
@@ -45,7 +45,7 @@ func (m *SysJob) GetFileExportTable(c *gin.Context) {
 	var response []SysJobResponse
 	for _, job := range results {
 		var params TargetParams
-		if err := json.Unmarshal(job.TargetParams, &params); err != nil {
+		if err := json.Unmarshal([]byte(job.TargetParams), &params); err != nil {
 			c.JSON(http.StatusInternalServerError, services.ErrResp(err.Error()))
 			return
 		}
diff --git a/features/lm/file_export/model.go b/features/lm/file_export/model.go
index bb9eda9e..33a611f9 100644
--- a/features/lm/file_export/model.go
+++ b/features/lm/file_export/model.go
@@ -2,7 +2,6 @@ package file_export
 
 import (
 	"be.ems/lib/file"
-	"gorm.io/datatypes"
 )
 
 const (
@@ -10,9 +9,9 @@ const (
 )
 
 type SysJob struct {
-	JobID        int64          `gorm:"column:job_id;primary_key;auto_increment" json:"job_id"`        //任务ID
-	InvokeTarget string         `gorm:"column:invoke_target" json:"invoke_target"`                     //调用目标字符串
-	TargetParams datatypes.JSON `gorm:"column:target_params;type:json" json:"target_params,omitempty"` //调用目标传入参数
+	JobID        int64  `gorm:"column:job_id;primary_key;auto_increment" json:"job_id"`        //任务ID
+	InvokeTarget string `gorm:"column:invoke_target" json:"invoke_target"`                     //调用目标字符串
+	TargetParams string `gorm:"column:target_params;type:json" json:"target_params,omitempty"` //调用目标传入参数
 }
 
 func (m *SysJob) TableName() string {