diff --git a/addons/EGFramework/Module/OtherTools/EGWebDav.cs b/addons/EGFramework/Module/OtherTools/EGWebDav.cs
index 717e44a..4222347 100644
--- a/addons/EGFramework/Module/OtherTools/EGWebDav.cs
+++ b/addons/EGFramework/Module/OtherTools/EGWebDav.cs
@@ -202,7 +202,7 @@ namespace EGFramework{
         }
     }
 
-    public struct WebDavFileMsg{
+    public struct WebDavFileMsg : IEGFileMsg{
         public string FileName { set; get; }
         public bool IsCollection { set; get; }
 
@@ -212,6 +212,17 @@ namespace EGFramework{
         public long? ContentLength { set; get; }
         public string Uri { set; get; }
         public DateTime? LastUpdateTime { set; get; }
+
+        public DateTime? LastModify  { set; get; }
+
+        public void Init(string fileName, bool isCollection, string uri, long? contentLength = null, DateTime? lastModify = null)
+        {
+            this.FileName = fileName;
+            this.IsCollection = isCollection;
+            this.Uri = uri;
+            this.ContentLength = contentLength;
+            this.LastModify = lastModify;
+        }
     }
 
     public static class EGWebDavExtension{
diff --git a/addons/EGFramework/Module/SaveTools/SaveToolsInterface.cs b/addons/EGFramework/Module/SaveTools/SaveToolsInterface.cs
index 01e64a0..049f83c 100644
--- a/addons/EGFramework/Module/SaveTools/SaveToolsInterface.cs
+++ b/addons/EGFramework/Module/SaveTools/SaveToolsInterface.cs
@@ -1,40 +1,46 @@
 using System;
 using System.Collections.Generic;
 using System.Data.Common;
+using System.IO;
 using System.Linq;
 using System.Linq.Expressions;
 using System.Threading.Tasks;
 
 namespace EGFramework
 {
-    #region Sync_Interface
+    #region SaveInit
+
     public interface IEGSave{
         void InitSave(string path);
     }
-
     public interface IEGSaveReadOnly{
         void InitReadOnly(string data);
         void InitReadOnly(byte[] data);
     }
 
+    public interface IEGSaveAsync{
+        Task InitSaveFileAsync(string path);
+    }
+    public interface IEGSaveReadOnlyAsync{
+        Task InitReadOnlyAsync(string data);
+        Task InitReadOnlyAsync(byte[] data);
+    }
+
+    #endregion
+    
+    #region DBConnection
     public interface IEGCanGetDBConnection{
         DbConnection GetConnection();
     }
+    #endregion
 
+    #region Object
     public interface IEGSaveObjectReadOnly{
         TObject GetObject<TObject>(string objectKey) where TObject : new();
         IEnumerable<string> GetKeys();
         bool ContainsKey(string objectKey);
     }
-    public interface IEGSaveDataReadOnly{
-        TData GetData<TData>(string dataKey,object id) where TData : new();
-        IEnumerable<TData> GetAll<TData>(string dataKey) where TData : new();
-        IEnumerable<TData> FindData<TData>(string dataKey,Expression<Func<TData, bool>> expression) where TData : new();
-        IEnumerable<string> GetKeys();
-        bool ContainsKey(string dataKey);
-        bool ContainsData(string dataKey,object id);
-    }
-    
+
     public interface IEGSaveObject : IEGSaveObjectReadOnly{
         /// <summary>
         /// SetObject will add a object if it not exisits, replace the object if it already exists.
@@ -47,7 +53,24 @@ namespace EGFramework
         void AddObject<TObject>(string objectKey,TObject obj);
         void UpdateObject<TObject>(string objectKey,TObject obj);
     }
+    public interface IEGSaveObjectReadOnlyAsync{
+        Task<TObject> GetObjectAsync<TObject>(string objectKey) where TObject : new();
+    }
+    public interface IEGSaveObjectAsync : IEGSaveObjectReadOnlyAsync{
+        Task SetObjectAsync<TObject>(string objectKey,TObject obj);
+    }
+    #endregion
     
+    #region Data
+    public interface IEGSaveDataReadOnly{
+        TData GetData<TData>(string dataKey,object id) where TData : new();
+        IEnumerable<TData> GetAll<TData>(string dataKey) where TData : new();
+        IEnumerable<TData> FindData<TData>(string dataKey,Expression<Func<TData, bool>> expression) where TData : new();
+        IEnumerable<string> GetKeys();
+        bool ContainsKey(string dataKey);
+        bool ContainsData(string dataKey,object id);
+    }
+
     public interface IEGSaveData : IEGSaveDataReadOnly{
         void SetData<TData>(string dataKey,TData data,object id);
         void AddData<TData>(string dataKey,TData data);
@@ -55,29 +78,45 @@ namespace EGFramework
         void RemoveData<TData>(string dataKey,object id);
         void UpdateData<TData>(string dataKey,TData data,object id);
     }
-    #endregion
-
-    #region Async_Interface
-    public interface IEGSaveAsync{
-        Task InitSaveFileAsync(string path);
-    }
-    public interface IEGSaveReadOnlyAsync{
-        Task InitReadOnlyAsync(string data);
-        Task InitReadOnlyAsync(byte[] data);
-    }
-    public interface IEGSaveObjectReadOnlyAsync{
-        Task<TObject> GetObjectAsync<TObject>(string objectKey) where TObject : new();
-    }
+    
     public interface IEGSaveDataReadOnlyAsync{
         Task<TData> GetDataAsync<TData>(string dataKey,object id) where TData : new();
         Task<IEnumerable<TData>> GetAllAsync<TData>(string dataKey) where TData : new();
         Task<IEnumerable<TData>> FindDataAsync<TData>(string dataKey,Expression<Func<TData, bool>> expression) where TData : new();
     }
-    public interface IEGSaveObjectAsync : IEGSaveObjectReadOnlyAsync{
-        Task SetObjectAsync<TObject>(string objectKey,TObject obj);
-    }
+    
     public interface IEGSaveDataAsync : IEGSaveDataReadOnlyAsync{
         Task SetDataAsync<TData>(string dataKey,TData data,object id);
     }
     #endregion
+
+    #region File
+    public interface IEGFileMsg{
+        public string FileName {  get; }
+        public bool IsCollection { get; }
+        /// <summary>
+        /// unit is kb
+        /// </summary>
+        public long? ContentLength { get; }
+        public string Uri { get; }
+        public DateTime? LastModify { get; }
+        public void Init(string fileName,bool isCollection,string uri,long? contentLength,DateTime? lastmodify);
+    }
+    public interface IEGSaveFileReadOnly{
+        IEnumerable<IEGFileMsg> ListRemoteFilePath(string remotePath);
+        IEnumerable<IEGFileMsg> ListLocalFilePath(string localPath);
+        bool IsRemoteFileExist(string remotePath);
+        void DownloadFile(string remotePath,string localPath);
+        Stream DownloadFile(string remotePath);
+        void SyncFile(string remotePath,string localPath);
+    }
+    public interface IEGSaveFile:IEGSaveFileReadOnly{
+        void UploadFile(FileStream localFileStream,string remotePath);
+        void UploadFile(string localPath,string remotePath);
+        void RemoveRemote(string remotePath);
+        void MakeDictionaryRemote(string remotePath);
+        void CopyRemote(string sourcePath,string copyPath);
+        void MoveRemote(string sourcePath,string movePath);
+    }
+    #endregion
 }
\ No newline at end of file