diff --git a/DCT_test/DCT_test/LogFileReader.cs b/DCT_test/DCT_test/LogFileReader.cs
index e7b3b85..c1f8b38 100644
--- a/DCT_test/DCT_test/LogFileReader.cs
+++ b/DCT_test/DCT_test/LogFileReader.cs
@@ -59,6 +59,24 @@ namespace DCT_test
                 // =========================================================================
 
                 // TODO: 사용자 정의 파일 파싱 및 패킷 조립 로직을 이곳에 구현하세요.
+                // 20260907 add txt file
+                string fileExt = System.IO.Path.GetExtension(filePath);
+
+                switch (fileExt.ToLower())
+                {
+                    case ".txt":
+                        ParseTxtFile(filePath, result);
+                        break;
+
+                    case ".csv":
+                        break;
+
+                    case ".mf4":
+                        break;
+
+                    default:
+                        break;
+                }
 
                 result.Success = result.Packets.Count > 0;
                 if (!result.Success && string.IsNullOrEmpty(result.ErrorMessage))
@@ -74,5 +92,52 @@ namespace DCT_test
 
             return result;
         }
+
+        public bool ParseTxtFile(string filePath, LogFileReadResult result)
+        {
+            bool bRet = false;
+            try
+            {
+                if (File.Exists(filePath))
+                {
+                    //파일을 사용한 후 닫아주기위해 using으로 묶어준다.
+                    StreamReader reader = new StreamReader(filePath);
+                    string line;
+
+                    while ((line = reader.ReadLine()) != null)
+                    {
+                        if (line.StartsWith("[Recv]") == true)
+                        {
+                            if (line.Substring(31, 2) == "A3"
+                                || line.Substring(31, 2) == "A4"
+                                || line.Substring(31, 2) == "D0")
+                            {
+
+                                string data = line.Substring(22);
+                                byte cmdId = Convert.ToByte(line.Substring(31, 2), 16);
+                                int arrayLen = Convert.ToByte(line.Substring(25, 2), 16) << 8 | Convert.ToByte(line.Substring(28, 2), 16) - 1;
+                                byte[] dataArray = new byte[arrayLen];
+
+                                for (int i = 34, idx = 0; i < line.Length - 6; i += 3)
+                                    dataArray[idx++] = Convert.ToByte(line.Substring(i, 2), 16);
+
+                                DctPacket packet = DctPacket.Create(cmdId, dataArray);
+
+                                result.Packets.Add(packet);
+                            }
+                        }
+
+
+                    }
+                    bRet = true;
+                }
+            }
+            catch (Exception ex)
+            {
+                bRet = false;
+                result.ErrorMessage = $"ParseTxtFile error: {ex.Message}";
+            }
+            return bRet;
+        }
     }
 }