diff --git a/CoreCms.Net.Repository/Api/CoreCmsPrinterRepository.cs b/CoreCms.Net.Repository/Api/CoreCmsPrinterRepository.cs
index 3ad064c8..45aade6a 100644
--- a/CoreCms.Net.Repository/Api/CoreCmsPrinterRepository.cs
+++ b/CoreCms.Net.Repository/Api/CoreCmsPrinterRepository.cs
@@ -89,6 +89,12 @@ namespace CoreCms.Net.Repository
 
             //事物处理过程结束
             var bl = await DbClient.Updateable(oldModel).ExecuteCommandHasChangeAsync();
+
+            if (bl && oldModel.isDefault)
+            {
+                await DbClient.Updateable<CoreCmsPrinter>().SetColumns(p => p.isDefault == false).Where(p => p.id != oldModel.id).ExecuteCommandAsync();
+            }
+
             jm.code = bl ? 0 : 1;
             jm.msg = bl ? GlobalConstVars.EditSuccess : GlobalConstVars.EditFailure;