diff --git a/ProductionSystem/Forms/HomeForm.cs b/ProductionSystem/Forms/HomeForm.cs
index e7972a8..4f1908b 100644
--- a/ProductionSystem/Forms/HomeForm.cs
+++ b/ProductionSystem/Forms/HomeForm.cs
@@ -190,7 +190,10 @@ namespace ProductionSystem.Forms
             var selectedItem = cmbProductType.SelectedItem as ListItem;
             if (selectedItem == null || string.IsNullOrEmpty(selectedItem.Value))
             {
-                CustomMessageBoxHelper.AlertShow(this, "产品型号为空！");
+                if(selectedItem.Text != "--请选择--")
+                {
+                    CustomMessageBoxHelper.AlertShow(this, "产品型号为空！");
+                }               
                 return;
             }
             Program.ProductType = selectedItem.Value;//选中的产品型号
diff --git a/ProductionSystem_UserControl/ExtendedControls/MyParaControl.Designer.cs b/ProductionSystem_UserControl/ExtendedControls/MyParaControl.Designer.cs
index 52a87bc..05110a4 100644
--- a/ProductionSystem_UserControl/ExtendedControls/MyParaControl.Designer.cs
+++ b/ProductionSystem_UserControl/ExtendedControls/MyParaControl.Designer.cs
@@ -108,7 +108,7 @@
             this.txtMaxVal.Location = new System.Drawing.Point(148, 5);
             this.txtMaxVal.Name = "txtMaxVal";
             this.txtMaxVal.Properties.AutoHeight = false;
-            this.txtMaxVal.Properties.NullValuePrompt = "电流上限";
+            this.txtMaxVal.Properties.NullValuePrompt = "上限";
             this.txtMaxVal.Size = new System.Drawing.Size(77, 27);
             this.txtMaxVal.StyleController = this.layoutControl1;
             this.txtMaxVal.TabIndex = 5;
@@ -118,7 +118,7 @@
             this.txtMinVal.Location = new System.Drawing.Point(235, 5);
             this.txtMinVal.Name = "txtMinVal";
             this.txtMinVal.Properties.AutoHeight = false;
-            this.txtMinVal.Properties.NullValuePrompt = "电流下限";
+            this.txtMinVal.Properties.NullValuePrompt = "下限";
             this.txtMinVal.Size = new System.Drawing.Size(77, 27);
             this.txtMinVal.StyleController = this.layoutControl1;
             this.txtMinVal.TabIndex = 6;