diff --git a/Dockerfile b/Dockerfile
index 21321bb..6eded1a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -22,6 +22,9 @@ ENV PROXY=direct://
 ENV MTU=9000
 ENV RESTAPI=
 ENV UDP_TIMEOUT=
+ENV TCP_SNDBUF=
+ENV TCP_RCVBUF=
+ENV TCP_AUTO_TUNING=
 ENV EXTRA_COMMANDS=
 ENV TUN_INCLUDED_ROUTES=
 ENV TUN_EXCLUDED_ROUTES=
diff --git a/docker/entrypoint.sh b/docker/entrypoint.sh
index c177b76..b812680 100644
--- a/docker/entrypoint.sh
+++ b/docker/entrypoint.sh
@@ -69,6 +69,18 @@ run() {
     ARGS="$ARGS --udp-timeout $UDP_TIMEOUT"
   fi
 
+  if [ -n "$TCP_SNDBUF" ]; then
+    ARGS="$ARGS --tcp-sndbuf $TCP_SNDBUF"
+  fi
+
+  if [ -n "$TCP_RCVBUF" ]; then
+    ARGS="$ARGS --tcp-rcvbuf $TCP_RCVBUF"
+  fi
+
+  if [ "$TCP_AUTO_TUNING" -eq 1 ]; then
+    ARGS="$ARGS --tcp-auto-tuning"
+  fi
+
   exec tun2socks \
     --loglevel "$LOGLEVEL" \
     --fwmark "$FWMARK" \