diff --git a/FileCopy.cs b/FileCopy.cs
index 22f3903..f0ab4cf 100644
--- a/FileCopy.cs
+++ b/FileCopy.cs
@@ -16,6 +16,30 @@ public class CopyList
 }
 public class FileCopy
 {
+	private static void ListFileInDic(DirectoryInfo source,DirectoryInfo target,List<(FileInfo,FileInfo)> values)
+	{
+		foreach (var file in source.GetFiles())
+		{
+		/*Debug.WriteLine(Path.Join(target.FullName, file.Name));*/
+			try
+			{
+				values.Add((file, new FileInfo(Path.Join(target.FullName, file.Name))));
+			}catch (Exception ex)
+			{
+				Debug.WriteLine(ex);
+			}
+		}
+		foreach(var dir in source.GetDirectories())
+		{
+			try
+			{
+				ListFileInDic(dir, new DirectoryInfo(Path.Join(target.FullName, dir.Name)), values);
+			}catch(Exception ex)
+			{
+				Debug.WriteLine(ex);
+			}
+		}
+	}
 	
 	public static void Copy(string source,string des)
 	{
@@ -29,72 +53,51 @@ public class FileCopy
 			{
 				desDir.Create();
 			}
-			
-			using(var fileInfoDb = new FileInfoDb())
+			var cpFileList = new List<(FileInfo, FileInfo)>();
+			ListFileInDic(sourceDir, desDir, cpFileList);
+			var sortedFile = cpFileList.OrderBy(o=>o.Item1.Length).ToList();
+			using (var fileInfoDb = new FileInfoDb())
 			{
-				foreach (var file in sourceDir.GetFiles())
+				foreach(var file in sortedFile)
 				{
 					try
 					{
-						string destinationFile = Path.Combine(desDir.FullName, file.Name);
-						var tryGetFileDbInfo = fileInfoDb.Files.Where(w => w.Path == destinationFile).FirstOrDefault();
-						if (tryGetFileDbInfo != null)
+						var tryGetFileDb = fileInfoDb.Files.Where(w=>w.Path==file.Item2.FullName).FirstOrDefault();
+						if (tryGetFileDb == null)
 						{
-							if (tryGetFileDbInfo.Size == file.Length)
+							tryGetFileDb = new MyDB.Class.FileInfoTable();
+							tryGetFileDb.NeedChange = true;
+							tryGetFileDb.Path = file.Item2.FullName;
+							tryGetFileDb.Size = file.Item1.Length;
+							if (!file.Item2.Directory.Exists)
 							{
-								Debug.WriteLine($"Find the Same File In Db {destinationFile}");
-								continue;
-							}
-							else
-							{
-								tryGetFileDbInfo.NeedChange = true;
-								tryGetFileDbInfo.Size = file.Length;
-								file.CopyTo(destinationFile, true);
-								Debug.WriteLine($"renew {destinationFile} from Db");
+								file.Item2.Directory.Create();
 							}
+							file.Item1.CopyTo(file.Item2.FullName,true);
+							fileInfoDb.Files.Add(tryGetFileDb);
+							Debug.WriteLine($"Copied and added into Db {file.Item1.FullName} --> {file.Item2.FullName}");
 						}
 						else
 						{
-							tryGetFileDbInfo = new MyDB.Class.FileInfoTable();
-							tryGetFileDbInfo.Path = destinationFile;
-							tryGetFileDbInfo.Size = file.Length;
-							fileInfoDb.Files.Add(tryGetFileDbInfo);
-							file.CopyTo(destinationFile, true);
-							Debug.WriteLine($"new {destinationFile} into Db and Copy");
-						}
-						/*if (File.Exists(destinationFile))
-						{
-							var desFileInfo = new FileInfo(destinationFile);
-							if (desFileInfo.Length != file.Length)
+							if(tryGetFileDb.Size == file.Item1.Length)
 							{
-								*//*Console.WriteLine($"Renew {file}  --> {destinationFile}");*//*
-								copyList.Add((file.Length, file, destinationFile, "Renew"));
-								*//*file.CopyTo(destinationFile, true);*//*
+								Debug.WriteLine($"Found Same file from db {file.Item1.FullName}");
 							}
 							else
 							{
-								Debug.WriteLine($"Same {file}  --> {destinationFile} {file.Length / 1024 / 1024}MB");
-								*//*copyList.Add((file, destinationFile, 0, "Same"));*//*
+								file.Item1.CopyTo (file.Item2.FullName,true);
+								tryGetFileDb.Size = (int)file.Item1.Length;
+								tryGetFileDb.NeedChange= true;
+								Debug.WriteLine($"Renew {file.Item1.FullName}");
 							}
 						}
-						else
-						{
-							*//*Console.WriteLine($"NewFile {file} --> {destinationFile}");*//*
-							copyList.Add((file.Length, file, destinationFile, "NewFile"));
-						}*/
-
-					}catch(Exception ex)
+					}catch (Exception ex)
 					{
-						Debug.WriteLine(ex.ToString());
+						Debug.WriteLine(ex.Message);
 					}
 				}
 				fileInfoDb.SaveChanges();
 			}
-			//遍历目录
-			foreach (var subDir in sourceDir.GetDirectories())
-			{
-				Copy(subDir.FullName, Path.Combine(desDir.FullName, subDir.Name));
-			}
 		}
 		catch (Exception ex)
 		{
diff --git a/Program.cs b/Program.cs
index a2dd8ae..1600b73 100644
--- a/Program.cs
+++ b/Program.cs
@@ -20,7 +20,7 @@ using System.Management;
 
 	ManagementEventWatcher managementEventWatcher = new(query);
 
-	Debug.WriteLine("Waiting for USB...,take usb: ZyData");
+	Debug.WriteLine("Waiting for USB...,take usb: RXRData");
 
 
 
@@ -33,9 +33,10 @@ using System.Management;
 
 
 			Debug.WriteLine(driveName);
+			
 			var dataDir = new DirectoryInfo(Path.Join("D:", "老师文档"));
 
-			if (GetVolumeLabel(driveName) == "ZyData")
+			if (GetVolumeLabel(driveName) == "RXRData")
 			{
 				Debug.WriteLine("检测到拷出USB");
 				if (!dataDir.Exists)
@@ -99,7 +100,11 @@ using System.Management;
 				Debug.WriteLine("-----Copy out OK---------");
 				return;
 			}
-
+			if (GetVolumeLabel(driveName).StartsWith("RXR"))
+			{
+				Debug.WriteLine("-----It's my USB-----");
+				return;
+			}
 
 
 			string dPath = Path.Join("D:", "老师文档", GetVolumeLabel(driveName));