diff --git a/adapters/outbound/direct.go b/adapters/outbound/direct.go
index 4a8a10e3..70a3f9eb 100644
--- a/adapters/outbound/direct.go
+++ b/adapters/outbound/direct.go
@@ -32,7 +32,7 @@ func (d *Direct) Type() C.AdapterType {
 }
 
 func (d *Direct) Generator(metadata *C.Metadata) (adapter C.ProxyAdapter, err error) {
-	c, err := net.Dial("tcp", net.JoinHostPort(metadata.String(), metadata.Port))
+	c, err := net.DialTimeout("tcp", net.JoinHostPort(metadata.String(), metadata.Port), tcpTimeout)
 	if err != nil {
 		return
 	}
diff --git a/adapters/outbound/shadowsocks.go b/adapters/outbound/shadowsocks.go
index 55056359..3943c060 100644
--- a/adapters/outbound/shadowsocks.go
+++ b/adapters/outbound/shadowsocks.go
@@ -54,7 +54,7 @@ func (ss *ShadowSocks) Type() C.AdapterType {
 }
 
 func (ss *ShadowSocks) Generator(metadata *C.Metadata) (adapter C.ProxyAdapter, err error) {
-	c, err := net.Dial("tcp", ss.server)
+	c, err := net.DialTimeout("tcp", ss.server, tcpTimeout)
 	if err != nil {
 		return nil, fmt.Errorf("%s connect error", ss.server)
 	}
diff --git a/adapters/outbound/socks5.go b/adapters/outbound/socks5.go
index 1261f810..4fe1cfe1 100644
--- a/adapters/outbound/socks5.go
+++ b/adapters/outbound/socks5.go
@@ -46,7 +46,7 @@ func (ss *Socks5) Type() C.AdapterType {
 }
 
 func (ss *Socks5) Generator(metadata *C.Metadata) (adapter C.ProxyAdapter, err error) {
-	c, err := net.Dial("tcp", ss.addr)
+	c, err := net.DialTimeout("tcp", ss.addr, tcpTimeout)
 	if err != nil {
 		return nil, fmt.Errorf("%s connect error", ss.addr)
 	}
diff --git a/adapters/outbound/util.go b/adapters/outbound/util.go
index ea8d6958..f1292546 100644
--- a/adapters/outbound/util.go
+++ b/adapters/outbound/util.go
@@ -10,6 +10,10 @@ import (
 	C "github.com/Dreamacro/clash/constant"
 )
 
+const (
+	tcpTimeout = 5 * time.Second
+)
+
 // DelayTest get the delay for the specified URL
 func DelayTest(proxy C.Proxy, url string) (t int16, err error) {
 	addr, err := urlToMetadata(url)
diff --git a/adapters/outbound/vmess.go b/adapters/outbound/vmess.go
index 075a9fc0..ea2bce5d 100644
--- a/adapters/outbound/vmess.go
+++ b/adapters/outbound/vmess.go
@@ -49,7 +49,7 @@ func (ss *Vmess) Type() C.AdapterType {
 }
 
 func (ss *Vmess) Generator(metadata *C.Metadata) (adapter C.ProxyAdapter, err error) {
-	c, err := net.Dial("tcp", ss.server)
+	c, err := net.DialTimeout("tcp", ss.server, tcpTimeout)
 	if err != nil {
 		return nil, fmt.Errorf("%s connect error", ss.server)
 	}