diff --git a/parser/socks.go b/parser/socks.go
index dc420c7..394c40a 100644
--- a/parser/socks.go
+++ b/parser/socks.go
@@ -83,7 +83,7 @@ func (p *SocksParser) Parse(config ParseConfig, proxy string) (P.Proxy, error) {
 			UserName: username,
 			Password: password,
 			TLS:      tls == "true",
-			UDP:      udp == "true",
+			UDP:      udp == "true" || config.UseUDP,
 		},
 	}, nil
 }
diff --git a/parser/trojan.go b/parser/trojan.go
index 24b059c..6c6772c 100644
--- a/parser/trojan.go
+++ b/parser/trojan.go
@@ -66,7 +66,7 @@ func (p *TrojanParser) Parse(config ParseConfig, proxy string) (P.Proxy, error)
 		Port:           P.IntOrString(port),
 		Password:       password,
 		Network:        network,
-		UDP:            udp == "true",
+		UDP:            udp == "true" || config.UseUDP,
 		SkipCertVerify: insecureBool,
 	}
 
diff --git a/parser/vless.go b/parser/vless.go
index 519c3ff..9d8b5cb 100644
--- a/parser/vless.go
+++ b/parser/vless.go
@@ -69,7 +69,7 @@ func (p *VlessParser) Parse(config ParseConfig, proxy string) (P.Proxy, error) {
 		Port:           P.IntOrString(port),
 		UUID:           uuid,
 		Flow:           flow,
-		UDP:            udp == "true",
+		UDP:            udp == "true" || config.UseUDP,
 		SkipCertVerify: insecureBool,
 	}