diff --git a/adapter/outbound/base.go b/adapter/outbound/base.go
index 93f6e142..9e5112c6 100644
--- a/adapter/outbound/base.go
+++ b/adapter/outbound/base.go
@@ -56,35 +56,15 @@ func (b *Base) Type() C.AdapterType {
 	return b.tp
 }
 
-// StreamConnContext implements C.ProxyAdapter
-func (b *Base) StreamConnContext(ctx context.Context, c net.Conn, metadata *C.Metadata) (net.Conn, error) {
-	return c, C.ErrNotSupport
-}
-
 func (b *Base) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn, error) {
 	return nil, C.ErrNotSupport
 }
 
-// DialContextWithDialer implements C.ProxyAdapter
-func (b *Base) DialContextWithDialer(ctx context.Context, dialer C.Dialer, metadata *C.Metadata) (_ C.Conn, err error) {
-	return nil, C.ErrNotSupport
-}
-
 // ListenPacketContext implements C.ProxyAdapter
 func (b *Base) ListenPacketContext(ctx context.Context, metadata *C.Metadata) (C.PacketConn, error) {
 	return nil, C.ErrNotSupport
 }
 
-// ListenPacketWithDialer implements C.ProxyAdapter
-func (b *Base) ListenPacketWithDialer(ctx context.Context, dialer C.Dialer, metadata *C.Metadata) (_ C.PacketConn, err error) {
-	return nil, C.ErrNotSupport
-}
-
-// SupportWithDialer implements C.ProxyAdapter
-func (b *Base) SupportWithDialer() C.NetWork {
-	return C.InvalidNet
-}
-
 // SupportUOT implements C.ProxyAdapter
 func (b *Base) SupportUOT() bool {
 	return false
@@ -348,17 +328,6 @@ func (p *autoCloseProxyAdapter) DialContext(ctx context.Context, metadata *C.Met
 	return c, nil
 }
 
-func (p *autoCloseProxyAdapter) DialContextWithDialer(ctx context.Context, dialer C.Dialer, metadata *C.Metadata) (_ C.Conn, err error) {
-	c, err := p.ProxyAdapter.DialContextWithDialer(ctx, dialer, metadata)
-	if err != nil {
-		return nil, err
-	}
-	if c, ok := c.(AddRef); ok {
-		c.AddRef(p)
-	}
-	return c, nil
-}
-
 func (p *autoCloseProxyAdapter) ListenPacketContext(ctx context.Context, metadata *C.Metadata) (_ C.PacketConn, err error) {
 	pc, err := p.ProxyAdapter.ListenPacketContext(ctx, metadata)
 	if err != nil {
@@ -370,17 +339,6 @@ func (p *autoCloseProxyAdapter) ListenPacketContext(ctx context.Context, metadat
 	return pc, nil
 }
 
-func (p *autoCloseProxyAdapter) ListenPacketWithDialer(ctx context.Context, dialer C.Dialer, metadata *C.Metadata) (_ C.PacketConn, err error) {
-	pc, err := p.ProxyAdapter.ListenPacketWithDialer(ctx, dialer, metadata)
-	if err != nil {
-		return nil, err
-	}
-	if pc, ok := pc.(AddRef); ok {
-		pc.AddRef(p)
-	}
-	return pc, nil
-}
-
 func (p *autoCloseProxyAdapter) Close() error {
 	p.closeOnce.Do(func() {
 		log.Debugln("Closing outdated proxy [%s]", p.Name())
diff --git a/adapter/outboundgroup/patch_android.go b/adapter/outboundgroup/patch_android.go
index 016ed606..f0c254c2 100644
--- a/adapter/outboundgroup/patch_android.go
+++ b/adapter/outboundgroup/patch_android.go
@@ -35,18 +35,6 @@ func (lb *LoadBalance) Now() string {
 	return ""
 }
 
-func (r *Relay) Providers() []P.ProxyProvider {
-	return r.providers
-}
-
-func (r *Relay) Proxies() []C.Proxy {
-	return r.GetProxies(false)
-}
-
-func (r *Relay) Now() string {
-	return ""
-}
-
 func (s *Selector) Providers() []P.ProxyProvider {
 	return s.providers
 }
diff --git a/adapter/outboundgroup/relay.go b/adapter/outboundgroup/relay.go
deleted file mode 100644
index 8e93d898..00000000
--- a/adapter/outboundgroup/relay.go
+++ /dev/null
@@ -1,163 +0,0 @@
-package outboundgroup
-
-import (
-	"context"
-	"encoding/json"
-
-	"github.com/metacubex/mihomo/adapter/outbound"
-	"github.com/metacubex/mihomo/component/dialer"
-	"github.com/metacubex/mihomo/component/proxydialer"
-	C "github.com/metacubex/mihomo/constant"
-	P "github.com/metacubex/mihomo/constant/provider"
-	"github.com/metacubex/mihomo/log"
-)
-
-type Relay struct {
-	*GroupBase
-	Hidden bool
-	Icon   string
-}
-
-// DialContext implements C.ProxyAdapter
-func (r *Relay) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn, error) {
-	proxies, chainProxies := r.proxies(metadata, true)
-
-	switch len(proxies) {
-	case 0:
-		return outbound.NewDirect().DialContext(ctx, metadata)
-	case 1:
-		return proxies[0].DialContext(ctx, metadata)
-	}
-	var d C.Dialer
-	d = dialer.NewDialer()
-	for _, proxy := range proxies[:len(proxies)-1] {
-		d = proxydialer.New(proxy, d, false)
-	}
-	last := proxies[len(proxies)-1]
-	conn, err := last.DialContextWithDialer(ctx, d, metadata)
-	if err != nil {
-		return nil, err
-	}
-
-	for i := len(chainProxies) - 2; i >= 0; i-- {
-		conn.AppendToChains(chainProxies[i])
-	}
-
-	conn.AppendToChains(r)
-
-	return conn, nil
-}
-
-// ListenPacketContext implements C.ProxyAdapter
-func (r *Relay) ListenPacketContext(ctx context.Context, metadata *C.Metadata) (_ C.PacketConn, err error) {
-	proxies, chainProxies := r.proxies(metadata, true)
-
-	switch len(proxies) {
-	case 0:
-		return outbound.NewDirect().ListenPacketContext(ctx, metadata)
-	case 1:
-		return proxies[0].ListenPacketContext(ctx, metadata)
-	}
-
-	var d C.Dialer
-	d = dialer.NewDialer()
-	for _, proxy := range proxies[:len(proxies)-1] {
-		d = proxydialer.New(proxy, d, false)
-	}
-	last := proxies[len(proxies)-1]
-	pc, err := last.ListenPacketWithDialer(ctx, d, metadata)
-	if err != nil {
-		return nil, err
-	}
-
-	for i := len(chainProxies) - 2; i >= 0; i-- {
-		pc.AppendToChains(chainProxies[i])
-	}
-
-	pc.AppendToChains(r)
-
-	return pc, nil
-}
-
-// SupportUDP implements C.ProxyAdapter
-func (r *Relay) SupportUDP() bool {
-	proxies, _ := r.proxies(nil, false)
-	if len(proxies) == 0 { // C.Direct
-		return true
-	}
-	for i := len(proxies) - 1; i >= 0; i-- {
-		proxy := proxies[i]
-		if !proxy.SupportUDP() {
-			return false
-		}
-		if proxy.SupportUOT() {
-			return true
-		}
-		switch proxy.SupportWithDialer() {
-		case C.ALLNet:
-		case C.UDP:
-		default: // C.TCP and C.InvalidNet
-			return false
-		}
-	}
-	return true
-}
-
-// MarshalJSON implements C.ProxyAdapter
-func (r *Relay) MarshalJSON() ([]byte, error) {
-	all := []string{}
-	for _, proxy := range r.GetProxies(false) {
-		all = append(all, proxy.Name())
-	}
-	return json.Marshal(map[string]any{
-		"type":   r.Type().String(),
-		"all":    all,
-		"hidden": r.Hidden,
-		"icon":   r.Icon,
-	})
-}
-
-func (r *Relay) proxies(metadata *C.Metadata, touch bool) ([]C.Proxy, []C.Proxy) {
-	rawProxies := r.GetProxies(touch)
-
-	var proxies []C.Proxy
-	var chainProxies []C.Proxy
-	var targetProxies []C.Proxy
-
-	for n, proxy := range rawProxies {
-		proxies = append(proxies, proxy)
-		chainProxies = append(chainProxies, proxy)
-		subproxy := proxy.Unwrap(metadata, touch)
-		for subproxy != nil {
-			chainProxies = append(chainProxies, subproxy)
-			proxies[n] = subproxy
-			subproxy = subproxy.Unwrap(metadata, touch)
-		}
-	}
-
-	for _, proxy := range proxies {
-		if proxy.Type() != C.Direct && proxy.Type() != C.Compatible {
-			targetProxies = append(targetProxies, proxy)
-		}
-	}
-
-	return targetProxies, chainProxies
-}
-
-func (r *Relay) Addr() string {
-	proxies, _ := r.proxies(nil, false)
-	return proxies[len(proxies)-1].Addr()
-}
-
-func NewRelay(option *GroupCommonOption, providers []P.ProxyProvider) *Relay {
-	log.Warnln("The group [%s] with relay type is deprecated, please using dialer-proxy instead", option.Name)
-	return &Relay{
-		GroupBase: NewGroupBase(GroupBaseOption{
-			Name:      option.Name,
-			Type:      C.Relay,
-			Providers: providers,
-		}),
-		Hidden: option.Hidden,
-		Icon:   option.Icon,
-	}
-}
diff --git a/component/proxydialer/proxydialer.go b/component/proxydialer/proxydialer.go
index e3ea300a..fa574cec 100644
--- a/component/proxydialer/proxydialer.go
+++ b/component/proxydialer/proxydialer.go
@@ -8,7 +8,6 @@ import (
 	"strings"
 
 	N "github.com/metacubex/mihomo/common/net"
-	"github.com/metacubex/mihomo/component/dialer"
 	C "github.com/metacubex/mihomo/constant"
 	"github.com/metacubex/mihomo/tunnel"
 	"github.com/metacubex/mihomo/tunnel/statistic"
@@ -50,13 +49,7 @@ func (p proxyDialer) DialContext(ctx context.Context, network, address string) (
 		}
 		return N.NewBindPacketConn(pc, currentMeta.UDPAddr()), nil
 	}
-	var conn C.Conn
-	var err error
-	if _, ok := p.dialer.(dialer.Dialer); ok { // first using old function to let mux work
-		conn, err = p.proxy.DialContext(ctx, currentMeta)
-	} else {
-		conn, err = p.proxy.DialContextWithDialer(ctx, p.dialer, currentMeta)
-	}
+	conn, err := p.proxy.DialContext(ctx, currentMeta)
 	if err != nil {
 		return nil, err
 	}
@@ -72,14 +65,8 @@ func (p proxyDialer) ListenPacket(ctx context.Context, network, address string,
 }
 
 func (p proxyDialer) listenPacket(ctx context.Context, currentMeta *C.Metadata) (C.PacketConn, error) {
-	var pc C.PacketConn
-	var err error
 	currentMeta.NetWork = C.UDP
-	if _, ok := p.dialer.(dialer.Dialer); ok { // first using old function to let mux work
-		pc, err = p.proxy.ListenPacketContext(ctx, currentMeta)
-	} else {
-		pc, err = p.proxy.ListenPacketWithDialer(ctx, p.dialer, currentMeta)
-	}
+	pc, err := p.proxy.ListenPacketContext(ctx, currentMeta)
 	if err != nil {
 		return nil, err
 	}
diff --git a/constant/adapters.go b/constant/adapters.go
index 1cd146c1..c1ac3723 100644
--- a/constant/adapters.go
+++ b/constant/adapters.go
@@ -121,17 +121,6 @@ type ProxyAdapter interface {
 	ProxyInfo() ProxyInfo
 	MarshalJSON() ([]byte, error)
 
-	// Deprecated: use DialContextWithDialer and ListenPacketWithDialer instead.
-	// StreamConn wraps a protocol around net.Conn with Metadata.
-	//
-	// Examples:
-	//	conn, _ := net.DialContext(context.Background(), "tcp", "host:port")
-	//	conn, _ = adapter.StreamConnContext(context.Background(), conn, metadata)
-	//
-	// It returns a C.Conn with protocol which start with
-	// a new session (if any)
-	StreamConnContext(ctx context.Context, c net.Conn, metadata *Metadata) (net.Conn, error)
-
 	// DialContext return a C.Conn with protocol which
 	// contains multiplexing-related reuse logic (if any)
 	DialContext(ctx context.Context, metadata *Metadata) (Conn, error)
@@ -140,13 +129,6 @@ type ProxyAdapter interface {
 	// SupportUOT return UDP over TCP support
 	SupportUOT() bool
 
-	// SupportWithDialer only for deprecated relay group, the new protocol does not need to be implemented.
-	SupportWithDialer() NetWork
-	// DialContextWithDialer only for deprecated relay group, the new protocol does not need to be implemented.
-	DialContextWithDialer(ctx context.Context, dialer Dialer, metadata *Metadata) (Conn, error)
-	// ListenPacketWithDialer only for deprecated relay group, the new protocol does not need to be implemented.
-	ListenPacketWithDialer(ctx context.Context, dialer Dialer, metadata *Metadata) (PacketConn, error)
-
 	// IsL3Protocol return ProxyAdapter working in L3 (tell dns module not pass the domain to avoid loopback)
 	IsL3Protocol(metadata *Metadata) bool