diff --git a/ViewModel/Grading/GradingResultVM.cs b/ViewModel/Grading/GradingResultVM.cs
index c0b6caf..1271f5d 100644
--- a/ViewModel/Grading/GradingResultVM.cs
+++ b/ViewModel/Grading/GradingResultVM.cs
@@ -196,6 +196,7 @@ public class GradingResultVM : BaseViewModel
                 AutoSave();
             }
             SaveTestResult(SaveStatus.AutoSave);
+            SaveToCsv();
         }
         catch (Exception ex)
         {
@@ -261,7 +262,34 @@ public class GradingResultVM : BaseViewModel
         DSList.Rows.Add("pass", "pass");
         DSList.Rows.Add("refer", "refer");
     }
- 
+    [Log]
+    private void SaveToCsv()
+    {
+        string strBaseUrl = AppDomain.CurrentDomain.BaseDirectory;
+        string filePath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "histroy.csv");
+        if (File.Exists(filePath)) { 
+            using (var writer = new StreamWriter(filePath,true))
+            {
+                Measurements info = algorithmResult.measurements;
+                string line = $"{FormatDouble_A(info.M1)}(mm)," +
+                                $"{FormatDouble_A(info.M2)}(mm)," +
+                                $"{FormatDouble_A(info.M3)}(mm)," +
+                                $"{FormatDouble_P(info.TABLE)}%," +
+                                $"{FormatDouble_P(info.CROWN_HEIGHT)}%," +
+                                $"{FormatDouble_P(info.PAV_DEPTH)}%," +
+                                $"{FormatDouble_P(info.TOTAL_DEPTH)}%," +
+                                $"{FormatDouble_A(info.CROWN_ANGLE)}°," +
+                                $"{FormatDouble_A(info.PAV_ANGLE)}°," +
+                                $"{FormatDouble_A(info.CULET_SIZE)}(mm)," +
+                                $"{FormatDouble_P(info.GIRDLE)}%," +
+                                $"{calGirdleName(info)}," +
+                                $"," +
+                                $"," +
+                                $"{GetGradeEnName(GetGradeOrder(CutLevelTotal))}";
+                 writer.WriteLine(line);
+            }
+        }
+    }
     [Log]
     private void InitView(AlgorithmResultEntity result)
     {