diff --git a/deploy/.env.public.example b/deploy/.env.public.example
index 1a566d1..82964b3 100644
--- a/deploy/.env.public.example
+++ b/deploy/.env.public.example
@@ -39,8 +39,8 @@ MEDIASOUP_LISTEN_IP=0.0.0.0
 # 留空会导致远端浏览器只能拿到局域网/回环地址，完全建不连
 MEDIASOUP_ANNOUNCED_IP=123.6.102.114
 
-MEDIASOUP_RTC_MIN_PORT=70000
-MEDIASOUP_RTC_MAX_PORT=70199
+MEDIASOUP_RTC_MIN_PORT=30000
+MEDIASOUP_RTC_MAX_PORT=30199
 
 # ============================================================
 # TURN 开启（公网对称 NAT fallback 必备）