diff --git a/media-server/.env.example b/media-server/.env.example
index ba039e6..efde2d6 100644
--- a/media-server/.env.example
+++ b/media-server/.env.example
@@ -27,8 +27,8 @@ MEDIASOUP_LISTEN_IP=123.6.102.114
 MEDIASOUP_ANNOUNCED_IP=123.6.102.114
 
 # RTP UDP/TCP 端口范围（MVP 约 25 用户级 Transport 足够）
-MEDIASOUP_RTC_MIN_PORT=40000
-MEDIASOUP_RTC_MAX_PORT=40199
+MEDIASOUP_RTC_MIN_PORT=30000
+MEDIASOUP_RTC_MAX_PORT=30199
 
 # Worker 日志级别（mediasoup 自身）：debug | warn | error | none
 MEDIASOUP_WORKER_LOG_LEVEL=warn