diff --git a/Example/UsingTest/Script/EGSaveTest.cs b/Example/UsingTest/Script/EGSaveTest.cs
index f1bc5b9..754c672 100644
--- a/Example/UsingTest/Script/EGSaveTest.cs
+++ b/Example/UsingTest/Script/EGSaveTest.cs
@@ -14,12 +14,16 @@ namespace EGFramework.Examples.Test{
             // GD.Print(ProjectSettings.GlobalizePath("user://SaveData/Default.json"));
             // GD.Print(Path.GetDirectoryName(ProjectSettings.GlobalizePath("res://SaveData/Default.json")));
             // TestLiteDB();
-            string CardPath1 = "SaveData/CardData1.json".GetGodotResPath();
-            this.EGSave().LoadObjectFile<EGJsonSave>(CardPath1);
-            // this.EGSave().SetObject(CardPath1,"Customer1",new Customer() { Name = "Andy" });
-            // this.EGSave().SetObject(CardPath1,"Customer3",new Customer() { Name = "Terry" });
-            Customer customer = this.EGSave().GetObject<Customer>(CardPath1,"Customer3");
-            GD.Print("ReadName is "+customer.Name);
+            // string CardPath1 = "SaveData/CardData1.json".GetGodotResPath();
+            // this.EGSave().LoadObjectFile<EGJsonSave>(CardPath1);
+            // // this.EGSave().SetObject(CardPath1,"Customer1",new Customer() { Name = "Andy" });
+            // // this.EGSave().SetObject(CardPath1,"Customer3",new Customer() { Name = "Terry" });
+            // Customer customer = this.EGSave().GetObject<Customer>(CardPath1,"Customer3");
+            // GD.Print("ReadName is "+customer.Name);
+            EGCsvSave csvSave = new EGCsvSave();
+            csvSave.InitSaveFile("SaveData/TestCsv.csv");
+            string[] group = {"7","MyTestData"};
+            csvSave.WriteLine(group);
         }
 
         public void TestSqlite(){
diff --git a/addons/EGFramework/Module/SaveTools/EGCsvSave.cs b/addons/EGFramework/Module/SaveTools/EGCsvSave.cs
index 98704e9..1ac9153 100644
--- a/addons/EGFramework/Module/SaveTools/EGCsvSave.cs
+++ b/addons/EGFramework/Module/SaveTools/EGCsvSave.cs
@@ -12,21 +12,23 @@ namespace EGFramework
     {
         public Encoding StringEncoding { set; get; } = Encoding.UTF8;
         private string DefaultPath { set; get; }
-        private IEnumerable<string[]> CsvDataBlock { get; set; }
+        private List<string[]> CsvDataBlock { get; set; }
         private string[] CsvDataHeader;
         private string ReadText { set; get; }
         public void InitSaveFile(string path)
         {
-            
+            ReadDataBlock(path);
         }
 
         public void ReadDataBlock(string path){
+            DefaultPath = path;
             try
             {
                 FileStream fileStream = new FileStream(path,FileMode.Open);
                 byte[] buffer = new byte[fileStream.Length];
                 fileStream.Read(buffer, 0, (int)fileStream.Length);
                 fileStream.Close();
+                fileStream.Dispose();
                 ReadText = StringEncoding.GetString(buffer);
             }
             catch (System.Exception e)
@@ -38,7 +40,41 @@ namespace EGFramework
                 CsvDataBlock = GetCSVDataBlockFromText(ReadText,out CsvDataHeader);
             }
         }
-        public IEnumerable<string[]> GetCSVDataBlockFromText(string text,out string[] header){
+
+        public void WriteDataBlock(string path){
+            try
+            {
+                FileStream fileStream = File.Create(path);
+                string writeText = "";
+                string headerText = "";
+                foreach(string headers in CsvDataHeader){
+                    headerText+=headers + ",";
+                }
+                headerText = headerText.Remove(headerText.Length-1,1);
+                writeText = headerText + "\n";
+                foreach(string[] lineData in CsvDataBlock){
+                    string lineText = "";
+                    foreach(string singleData in lineData){
+                        lineText += singleData + ",";
+                    }
+                    lineText = lineText.Remove(lineText.Length-1,1);
+                    writeText += lineText + "\n";
+                }
+                writeText = writeText.Remove(writeText.Length-1,1);
+
+                byte[] data = StringEncoding.GetBytes(writeText);
+                fileStream.Write(data,0,data.Length);
+                fileStream.Close();
+                fileStream.Dispose();
+            }
+            catch (System.Exception e)
+            {
+                Godot.GD.Print("e:" + e);
+                throw;
+            }
+        }
+
+        public List<string[]> GetCSVDataBlockFromText(string text,out string[] header){
             List<string[]> csvBlock = new List<string[]>();
             string[] lineData = text.Split('\n');
             header = lineData[0].Split(',');
@@ -51,6 +87,19 @@ namespace EGFramework
             return csvBlock;
         }
 
+        public string[] ReadLine(int id){
+            if(CsvDataBlock.Count()>0){
+                return CsvDataBlock[id];
+            }else{
+                return null;
+            }
+        }
+
+        public void WriteLine(string[] lineData){
+            CsvDataBlock.Add(lineData);
+            this.WriteDataBlock(DefaultPath);
+        }
+
         public void SetData<TData>(string dataKey, TData data, object id)
         {
             throw new NotImplementedException();
@@ -63,7 +112,7 @@ namespace EGFramework
         {
             throw new NotImplementedException();
         }
-
+        
         public IEnumerable<TData> FindData<TData>(string dataKey, Expression<Func<TData, bool>> expression) where TData : new()
         {
             throw new NotImplementedException();