diff --git a/TestingModule/ViewModels/CommandTreeViewModel.cs b/TestingModule/ViewModels/CommandTreeViewModel.cs
index b39b7e5..28fd431 100644
--- a/TestingModule/ViewModels/CommandTreeViewModel.cs
+++ b/TestingModule/ViewModels/CommandTreeViewModel.cs
@@ -189,7 +189,7 @@ namespace TestingModule.ViewModels
             {
                 try
                 {
-                    var assembly = Assembly.LoadFile(dllPath);
+                    var assembly = Assembly.LoadFrom(dllPath);
                     Assemblies.Add(assembly);
 
                     // 加载对应的XML注释文件 (项目没有用到)
diff --git a/UIShare/GlobalVariable/StepRunning.cs b/UIShare/GlobalVariable/StepRunning.cs
index e426eff..539625c 100644
--- a/UIShare/GlobalVariable/StepRunning.cs
+++ b/UIShare/GlobalVariable/StepRunning.cs
@@ -558,7 +558,7 @@ namespace UIShare
                 {
                     try
                     {
-                        //instance = _devices.DeviceDic[targetType.Name];
+                        instance = _deviceManager.DeviceMap[targetType.Name];
                     }
                     catch (Exception ex)
                     {