diff --git a/cmd/config/decode.go b/cmd/config/decode.go
index fe31904..ce3654d 100644
--- a/cmd/config/decode.go
+++ b/cmd/config/decode.go
@@ -88,7 +88,14 @@ func decodeIPv6(rawConfig *yamlConfig, config *Config) {
 
 func decodeProxy(rawConfig *yamlConfig, config *Config) {
     config.Proxy = rawConfig.Proxy
+    if config.Proxy.Core == "" {
+        config.Proxy.Core = "xray" // use xray in default
+    }
+    if config.Proxy.Core != "xray" && config.Proxy.Core != "v2ray" && config.Proxy.Core != "sagray" {
+        log.Warningf("Unknown core type -> %s", config.Proxy.Core)
+    }
     log.Debugf("Proxy log level -> %s", config.Proxy.Log)
+    log.Debugf("Core type -> %s", config.Proxy.Core)
     log.Debugf("Http inbounds -> %v", config.Proxy.Http)
     log.Debugf("Socks5 inbounds -> %v", config.Proxy.Socks)
     log.Debugf("Add-on inbounds -> %v", config.Proxy.AddOn)
diff --git a/cmd/controller.go b/cmd/controller.go
index 979b280..7bbdd58 100644
--- a/cmd/controller.go
+++ b/cmd/controller.go
@@ -58,7 +58,15 @@ func runScript(settings *config.Config) {
 }
 
 func runProxy(settings *config.Config) {
-    runProcess("xray", "-confdir", configDir)
+    if settings.Proxy.Core == "xray" { // xray-core
+        runProcess("xray", "-confdir", configDir)
+    } else if settings.Proxy.Core == "v2ray" { // v2fly-core
+        runProcess("v2ray", "-confdir", configDir)
+    } else if settings.Proxy.Core == "sagray" { // sager-core
+        runProcess("sagray", "run", "-confdir", configDir)
+    } else {
+        log.Panicf("Unknown core type -> %s", settings.Proxy.Core)
+    }
 }
 
 func runRadvd(settings *config.Config) {
diff --git a/cmd/proxy/main.go b/cmd/proxy/main.go
index 554a7b9..6d448cc 100644
--- a/cmd/proxy/main.go
+++ b/cmd/proxy/main.go
@@ -6,6 +6,7 @@ import (
 
 type Config struct {
     Log   string         `yaml:"log" json:"json"`
+    Core  string         `yaml:"core" json:"core"`
     Http  map[string]int `yaml:"http" json:"http"`
     Socks map[string]int `yaml:"socks" json:"socks"`
     AddOn []interface{}  `yaml:"addon" json:"addon"`
@@ -30,6 +31,9 @@ func loadInbounds(config *Config) string {
         DestOverride:    []string{"http", "tls", "quic"},
         DomainsExcluded: config.Sniff.Exclude,
     }
+    if config.Core == "v2ray" { // PATCH: v2fly-core v4 not support quic sniff
+        sniff.DestOverride = sniff.DestOverride[:len(sniff.DestOverride)-1]
+    }
     var inbounds []interface{}
     inbounds = append(inbounds, loadTProxyConfig("tproxy", config.V4TProxyPort, sniff))
     inbounds = append(inbounds, loadTProxyConfig("tproxy6", config.V6TProxyPort, sniff))