diff --git a/include/cpp-logger/clogger.h b/include/cpp-logger/clogger.h
index e916196..bdf57f4 100644
--- a/include/cpp-logger/clogger.h
+++ b/include/cpp-logger/clogger.h
@@ -1,11 +1,12 @@
 #ifdef __cplusplus
 extern "C" {
 #endif
-#define CPP_LOGGER_PRINT 1
-#define CPP_LOGGER_ERROR 2
-#define CPP_LOGGER_WARN 3
-#define CPP_LOGGER_INFO 4
-#define CPP_LOGGER_DEBUG 5
+const int CPP_LOGGER_PRINT = 1;
+const int CPP_LOGGER_ERROR = 2;
+const int CPP_LOGGER_WARN = 3;
+const int CPP_LOGGER_INFO = 4;
+const int CPP_LOGGER_DEBUG = 5;
+const int CPP_LOGGER_TRACE = 6;
 extern void cpp_logger_clog(const int logger_level, const char* name, const char* string,
                  ...);
 extern void cpp_logger_clog_level(const int logger_level, const char* name);
diff --git a/include/cpp-logger/logger.h b/include/cpp-logger/logger.h
index f45fb8c..8bba38c 100644
--- a/include/cpp-logger/logger.h
+++ b/include/cpp-logger/logger.h
@@ -17,7 +17,8 @@ enum LoggerType {
   LOG_ERROR = 2,
   LOG_WARN = 3,
   LOG_INFO = 4,
-  LOG_DEBUG = 5
+  LOG_DEBUG = 5,
+  LOG_TRACE = 6,
 };
 
 class Logger {
@@ -31,7 +32,7 @@ class Logger {
   explicit Logger(std::string app_name)
       : _app_name(app_name), level(LoggerType::LOG_ERROR) {}
 
-  static std::shared_ptr<Logger> Instance(std::string app_name = "MIMIR") {
+  static std::shared_ptr<Logger> Instance(std::string app_name = "LOGGER") {
     auto iter = instance_map.find(app_name);
     std::shared_ptr<Logger> instance;
     if (iter == instance_map.end()) {
@@ -51,36 +52,44 @@ class Logger {
     (void)resu;
     switch (type) {
       case LoggerType::LOG_PRINT: {
-        if (level >= LoggerType::LOG_PRINT)
+        if (level >= LoggerType::LOG_PRINT) {
           fprintf(stdout, "[%s PRINT]: %s\n", _app_name.c_str(), buffer);
-        fflush(stdout);
+          fflush(stdout);
+        }
+        break;
+      }
+      case LoggerType::LOG_TRACE: {
+        if (level >= LoggerType::LOG_TRACE) {
+          fprintf(stdout, "[%s TRACE]: %s\n", _app_name.c_str(), buffer);
+          fflush(stdout);
+        }
         break;
       }
       case LoggerType::LOG_DEBUG: {
         if (level >= LoggerType::LOG_DEBUG) {
-            fprintf(stdout, "[%s DEBUG]: %s\n", _app_name.c_str(), buffer);
-            fflush(stderr);
+          fprintf(stdout, "[%s DEBUG]: %s\n", _app_name.c_str(), buffer);
+          fflush(stdout);
         }
         break;
       }
       case LoggerType::LOG_INFO: {
         if (level >= LoggerType::LOG_INFO) {
-            fprintf(stdout, "[%s INFO]: %s\n", _app_name.c_str(), buffer);
-            fflush(stdout);
+          fprintf(stdout, "[%s INFO]: %s\n", _app_name.c_str(), buffer);
+          fflush(stdout);
         }
         break;
       }
       case LoggerType::LOG_WARN: {
         if (level >= LoggerType::LOG_WARN) {
-            fprintf(stdout, "[%s WARN]: %s\n", _app_name.c_str(), buffer);
-            fflush(stdout);
+          fprintf(stdout, "[%s WARN]: %s\n", _app_name.c_str(), buffer);
+          fflush(stdout);
         }
         break;
       }
       case LoggerType::LOG_ERROR: {
         if (level >= LoggerType::LOG_ERROR) {
-            fprintf(stderr, "[%s ERROR]: %s\n", _app_name.c_str(), buffer);
-            fflush(stderr);
+          fprintf(stderr, "[%s ERROR]: %s\n", _app_name.c_str(), buffer);
+          fflush(stderr);
         }
         break;
       }