diff --git a/SGGL/FineUIPro.Web/Transfer/Chart/SystemstatusEdit.aspx b/SGGL/FineUIPro.Web/Transfer/Chart/SystemstatusEdit.aspx
index 51864717..1bf0b9ba 100644
--- a/SGGL/FineUIPro.Web/Transfer/Chart/SystemstatusEdit.aspx
+++ b/SGGL/FineUIPro.Web/Transfer/Chart/SystemstatusEdit.aspx
@@ -75,11 +75,13 @@
                             <f:ListItem Value="Not Start" Text="Not Start"></f:ListItem>
                         </f:DropDownList>
                         <f:DropDownList ID="ddlElectricHeatTracing" runat="server" Label="电伴热" >
+                            <f:ListItem Value="" Text=""></f:ListItem>
                             <f:ListItem Value="NA" Text="NA"></f:ListItem>
                             <f:ListItem Value="Y" Text="Y"></f:ListItem>
                             <f:ListItem Value="N" Text="N"></f:ListItem>
                         </f:DropDownList>
                         <f:DropDownList ID="ddlInsulation" runat="server" Label="保温/冷" >
+                            <f:ListItem Value="" Text=""></f:ListItem>
                             <f:ListItem Value="NA" Text="NA"></f:ListItem>
                             <f:ListItem Value="Y" Text="Y"></f:ListItem>
                             <f:ListItem Value="N" Text="N"></f:ListItem>