diff --git a/RevokeMsgPatcher/FormMain.Designer.cs b/RevokeMsgPatcher/FormMain.Designer.cs
index b638844..66d009e 100644
--- a/RevokeMsgPatcher/FormMain.Designer.cs
+++ b/RevokeMsgPatcher/FormMain.Designer.cs
@@ -78,7 +78,7 @@
             this.btnPatch.Name = "btnPatch";
             this.btnPatch.Size = new System.Drawing.Size(98, 23);
             this.btnPatch.TabIndex = 3;
-            this.btnPatch.Text = "安装补丁";
+            this.btnPatch.Text = "安装补丁！";
             this.btnPatch.UseVisualStyleBackColor = true;
             this.btnPatch.Click += new System.EventHandler(this.btnPatch_Click);
             // 
diff --git a/RevokeMsgPatcher/Matcher/ModifyFinder.cs b/RevokeMsgPatcher/Matcher/ModifyFinder.cs
index dc4d8fc..4bb75cd 100644
--- a/RevokeMsgPatcher/Matcher/ModifyFinder.cs
+++ b/RevokeMsgPatcher/Matcher/ModifyFinder.cs
@@ -1,4 +1,5 @@
 using RevokeMsgPatcher.Model;
+using System;
 using System.Collections.Generic;
 using System.IO;
 
@@ -6,15 +7,16 @@ namespace RevokeMsgPatcher.Matcher
 {
     public class ModifyFinder
     {
+        // TODO 该逻辑需要优化！
         public static List<Change> FindChanges(string path, List<ReplacePattern> replacePatterns)
         {
             // 读取整个文件(dll)
             byte[] fileByteArray = File.ReadAllBytes(path);
 
-            List<Change> changes = new List<Change>();
+            List<Change> changes = new List<Change>(); // 匹配且需要替换的地方
 
             // 查找所有替换点
-            int matchNum = 0;
+            int matchNum = 0; // 匹配数量
             foreach (ReplacePattern pattern in replacePatterns)
             {
                 // 所有的匹配点位
@@ -33,13 +35,24 @@ namespace RevokeMsgPatcher.Matcher
             // 匹配数和期望的匹配数不一致时报错（当前一个特征只会出现一次）
             if (matchNum != replacePatterns.Count)
             {
-                if (IsAllReplaced(fileByteArray, replacePatterns))
+                Tuple<bool, SortedSet<string>> res = IsAllReplaced(fileByteArray, replacePatterns);
+                if (res.Item1)
                 {
                     throw new BusinessException("match_already_replace", "特征比对：当前应用已经安装了对应功能的补丁！");
                 }
                 else
                 {
-                    throw new BusinessException("match_inconformity", $"特征比对：当前特征码匹配数[{matchNum}]和期望的匹配数[{replacePatterns.Count}]不一致，如果当前版本为新版本，特征码可能出现变化，请联系作者处理！");
+                    if (res.Item2.Count > 0)
+                    {
+                        throw new BusinessException("match_inconformity", $"特征比对：以下功能补丁已经安装，请取消勾选！\n已安装功能：【{string.Join("、", res.Item2)}】");
+                    }
+                    else
+                    {
+                        throw new BusinessException("match_inconformity", $"特征比对：当前特征码匹配数[{matchNum}]和期望的匹配数[{replacePatterns.Count}]不一致。\n" +
+                            $"出现此种情况的一般有如下可能：\n" +
+                            $"1. 你可能已经安装了某个功能的补丁，请选择未安装功能进行安装。\n" +
+                            $"2. 如果当前版本为最新版本，特征码可能出现变化（可能性比较低），请联系作者处理。");
+                    }
                 }
             }
             else
@@ -50,11 +63,11 @@ namespace RevokeMsgPatcher.Matcher
                     // 此逻辑在当前特征配置下不会进入，因为查找串和替换串当前全部都是不相同的
                     if (changes.Count == 0)
                     {
-                        throw new BusinessException("match_already_replace", "特征比对：当前应用已经安装了防撤回补丁！");
+                        throw new BusinessException("match_already_replace", "特征比对：当前应用已经安装了所选功能补丁！");
                     }
                     else
                     {
-                        throw new BusinessException("match_part_replace", "特征比对：部分特征已经被替换，请确认是否有使用过其他防撤回补丁！");
+                        throw new BusinessException("match_part_replace", "特征比对：部分特征已经被替换，请确认是否有使用过其他防撤回/多开补丁！");
                     }
 
                 }
@@ -66,9 +79,10 @@ namespace RevokeMsgPatcher.Matcher
             }
         }
 
-        private static bool IsAllReplaced(byte[] fileByteArray, List<ReplacePattern> replacePatterns)
+        private static Tuple<bool, SortedSet<string>> IsAllReplaced(byte[] fileByteArray, List<ReplacePattern> replacePatterns)
         {
             int matchNum = 0;
+            SortedSet<string> alreadyReplaced = new SortedSet<string>(); // 已经被替换特征的功能
             foreach (ReplacePattern pattern in replacePatterns)
             {
                 // 所有的匹配点位
@@ -76,16 +90,10 @@ namespace RevokeMsgPatcher.Matcher
                 if (matchIndexs.Length == 1)
                 {
                     matchNum++;
+                    alreadyReplaced.Add(pattern.Category);
                 }
             }
-            if (matchNum == replacePatterns.Count)
-            {
-                return true;
-            }
-            else
-            {
-                return false;
-            }
+            return new Tuple<bool, SortedSet<string>>(matchNum == replacePatterns.Count, alreadyReplaced);
         }
     }
 }
diff --git a/RevokeMsgPatcher/Modifier/AppModifier.cs b/RevokeMsgPatcher/Modifier/AppModifier.cs
index 1b6c06f..699bf0f 100644
--- a/RevokeMsgPatcher/Modifier/AppModifier.cs
+++ b/RevokeMsgPatcher/Modifier/AppModifier.cs
@@ -345,6 +345,7 @@ namespace RevokeMsgPatcher.Modifier
                     bool success = editor.Patch();
                     if (!success)
                     {
+                        // 此处还原逻辑不可能进入
                         editor.Restore();
                     }
                     else
@@ -369,7 +370,7 @@ namespace RevokeMsgPatcher.Modifier
         {
             foreach (FileHexEditor editor in editors)
             {
-                if (!File.Exists(editor.FileBakPath))
+                if (!File.Exists(editor.FileBakPath) || editor.FileVersion != editor.BackupFileVersion)
                 {
                     return false;
                 }
diff --git a/RevokeMsgPatcher/Modifier/FileHexEditor.cs b/RevokeMsgPatcher/Modifier/FileHexEditor.cs
index 40be54c..6dbea11 100644
--- a/RevokeMsgPatcher/Modifier/FileHexEditor.cs
+++ b/RevokeMsgPatcher/Modifier/FileHexEditor.cs
@@ -80,7 +80,19 @@ namespace RevokeMsgPatcher.Modifier
         /// </summary>
         public void Backup()
         {
-            File.Copy(FilePath, FileBakPath, true);
+            // 不覆盖同版本的备份文件
+            if (File.Exists(FileBakPath))
+            {
+                if (FileVersion != BackupFileVersion)
+                {
+                    File.Copy(FilePath, FileBakPath, true);
+                }
+            }
+            else
+            {
+                File.Copy(FilePath, FileBakPath, true);
+            }
+
         }
 
         /// <summary>