diff --git a/common/config/config.go b/common/config/config.go
index 4f1c25b676..3f321c87ce 100644
--- a/common/config/config.go
+++ b/common/config/config.go
@@ -145,6 +145,9 @@ var InitialRootToken = os.Getenv("INITIAL_ROOT_TOKEN")
 
 var GeminiVersion = env.String("GEMINI_VERSION", "v1")
 
+
+var OnlyOneLogFile = env.Bool("ONLY_ONE_LOG_FILE", false)
+
 var RelayProxy = env.String("RELAY_PROXY", "")
 var UserContentRequestProxy = env.String("USER_CONTENT_REQUEST_PROXY", "")
 var UserContentRequestTimeout = env.Int("USER_CONTENT_REQUEST_TIMEOUT", 30)
diff --git a/common/logger/logger.go b/common/logger/logger.go
index f725c619ff..d1022932e6 100644
--- a/common/logger/logger.go
+++ b/common/logger/logger.go
@@ -27,7 +27,12 @@ var setupLogOnce sync.Once
 func SetupLogger() {
 	setupLogOnce.Do(func() {
 		if LogDir != "" {
-			logPath := filepath.Join(LogDir, fmt.Sprintf("oneapi-%s.log", time.Now().Format("20060102")))
+			var logPath string
+			if config.OnlyOneLogFile {
+				logPath = filepath.Join(LogDir, "oneapi.log")
+			} else {
+				logPath = filepath.Join(LogDir, fmt.Sprintf("oneapi-%s.log", time.Now().Format("20060102")))
+			}
 			fd, err := os.OpenFile(logPath, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
 			if err != nil {
 				log.Fatal("failed to open log file")