diff --git a/CalendarNotepad/WorkMain.cs b/CalendarNotepad/WorkMain.cs
index b24fd8e..53b78a1 100644
--- a/CalendarNotepad/WorkMain.cs
+++ b/CalendarNotepad/WorkMain.cs
@@ -377,6 +377,7 @@ namespace CalendarNotepad
             }
             var item = items[0];
             var fileName = item.Text;
+            var fileKey = item.SubItems[2].Text;
             var dlgr = Interaction.InputBox($"原文件名:{fileName}",Title: "修改文件名",DefaultResponse: fileName);
             if(dlgr == "") {
                 return;
@@ -385,7 +386,7 @@ namespace CalendarNotepad
                 return;
             }
             var wd = this.WorkDayKey;
-            this.Db.Updateable<WorkUnitPlusFile>().Where(a => a.WorkDay == wd).SetColumns(a => a.FileName == dlgr).ExecuteCommand();
+            this.Db.Updateable<WorkUnitPlusFile>().Where(a => a.WorkDay == wd && a.FileKey == fileKey).SetColumns(a => a.FileName == dlgr).ExecuteCommand();
             item.Text = dlgr;
             MessageBox.Show("文件名修改完成");
         }