diff --git a/src/serial_AT.cpp b/src/serial_AT.cpp
index aa2a150..d2f164b 100644
--- a/src/serial_AT.cpp
+++ b/src/serial_AT.cpp
@@ -294,6 +294,8 @@ static void handle_serial_at_data(const std::string& data)
         line.erase(0, line.find_first_not_of(" \t\r\n"));
         line.erase(line.find_last_not_of(" \t\r\n") + 1);
 
+        LOG_INFO("[serial_at][RAW] " + line);
+
         // IMEI：14~17 位纯数字
         if (line.size() >= 14 && line.size() <= 17 && std::all_of(line.begin(), line.end(), ::isdigit))
         {