diff --git a/MDM/Controllers/Plant/PlantProductlinebodyController.cs b/MDM/Controllers/Plant/PlantProductlinebodyController.cs
index cd64de6..3497a53 100644
--- a/MDM/Controllers/Plant/PlantProductlinebodyController.cs
+++ b/MDM/Controllers/Plant/PlantProductlinebodyController.cs
@@ -119,7 +119,7 @@ namespace MDM.Controllers.Plant
         /// <param name="site_code">工厂code</param>
         /// <returns></returns>
         [HttpGet("get_factory_site")]
-        public IActionResult GetFactorySite(string site_code)
+        public IActionResult GetFactorySite(string? site_code)
         {
             var response = _PlantProductlinebodyService.GetFactorySite(site_code);
 
@@ -129,7 +129,7 @@ namespace MDM.Controllers.Plant
         //获取车间
 
         [HttpGet("get_workshop")]
-        public IActionResult GetWorkShop(string site_code, string  workshop_code)
+        public IActionResult GetWorkShop(string? site_code, string?  workshop_code)
         {
             var response = _PlantProductlinebodyService.GetWorkShop(site_code,workshop_code);
 
diff --git a/MDM/Controllers/Plant/PlantWorkstationController.cs b/MDM/Controllers/Plant/PlantWorkstationController.cs
index fb10d91..c1d55e1 100644
--- a/MDM/Controllers/Plant/PlantWorkstationController.cs
+++ b/MDM/Controllers/Plant/PlantWorkstationController.cs
@@ -117,7 +117,7 @@ namespace MDM.Controllers.Plant
         /// <param name="site_code">工厂code</param>
         /// <returns></returns>
         [HttpGet("get_factory_site")]
-        public IActionResult GetFactorySite(string site_code)
+        public IActionResult GetFactorySite(string? site_code)
         {
             var response = _PlantWorkstationService.GetFactorySite(site_code);
 
@@ -127,7 +127,7 @@ namespace MDM.Controllers.Plant
 
         //获取车间
         [HttpGet("get_workshop")]
-        public IActionResult GetWorkShop(string site_code,string workshop_code)
+        public IActionResult GetWorkShop(string? site_code,string? workshop_code)
         {
             var response = _PlantWorkstationService.GetWorkShop(site_code,workshop_code);
 
@@ -136,7 +136,7 @@ namespace MDM.Controllers.Plant
 
         //获取产线
         [HttpGet("get_productlinebody")]
-        public IActionResult GetProductlinebody(string site_code, string workshop_code,string linecode)
+        public IActionResult GetProductlinebody(string? site_code, string? workshop_code,string? linecode)
         {
             var response = _PlantWorkstationService.GetPlantProductlinebodies(site_code, workshop_code,linecode);