diff --git a/proxy/vmess/encoding/commands.go b/proxy/vmess/encoding/commands.go
index 290bb6387..ae26a6f08 100644
--- a/proxy/vmess/encoding/commands.go
+++ b/proxy/vmess/encoding/commands.go
@@ -110,38 +110,38 @@ func (v *CommandSwitchAccountFactory) Marshal(command interface{}, writer io.Wri
 func (v *CommandSwitchAccountFactory) Unmarshal(data []byte) (interface{}, error) {
 	cmd := new(protocol.CommandSwitchAccount)
 	if len(data) == 0 {
-		return nil, errors.New("VMess|SwitchAccountCommand: Insufficient length.")
+		return nil, errors.New("insufficient length.").Path("Proxy", "VMess", "Encoding", "Command")
 	}
 	lenHost := int(data[0])
 	if len(data) < lenHost+1 {
-		return nil, errors.New("VMess|SwitchAccountCommand: Insufficient length.")
+		return nil, errors.New("insufficient length.").Path("Proxy", "VMess", "Encoding", "Command")
 	}
 	if lenHost > 0 {
 		cmd.Host = net.ParseAddress(string(data[1 : 1+lenHost]))
 	}
 	portStart := 1 + lenHost
 	if len(data) < portStart+2 {
-		return nil, errors.New("VMess|SwitchAccountCommand: Insufficient length.")
+		return nil, errors.New("insufficient length.").Path("Proxy", "VMess", "Encoding", "Command")
 	}
 	cmd.Port = net.PortFromBytes(data[portStart : portStart+2])
 	idStart := portStart + 2
 	if len(data) < idStart+16 {
-		return nil, errors.New("VMess|SwitchAccountCommand: Insufficient length.")
+		return nil, errors.New("insufficient length.").Path("Proxy", "VMess", "Encoding", "Command")
 	}
 	cmd.ID, _ = uuid.ParseBytes(data[idStart : idStart+16])
 	alterIDStart := idStart + 16
 	if len(data) < alterIDStart+2 {
-		return nil, errors.New("VMess|SwitchAccountCommand: Insufficient length.")
+		return nil, errors.New("insufficient length.").Path("Proxy", "VMess", "Encoding", "Command")
 	}
 	cmd.AlterIds = serial.BytesToUint16(data[alterIDStart : alterIDStart+2])
 	levelStart := alterIDStart + 2
 	if len(data) < levelStart+1 {
-		return nil, errors.New("VMess|SwitchAccountCommand: Insufficient length.")
+		return nil, errors.New("insufficient length.").Path("Proxy", "VMess", "Encoding", "Command")
 	}
 	cmd.Level = uint32(data[levelStart])
 	timeStart := levelStart + 1
 	if len(data) < timeStart {
-		return nil, errors.New("VMess|SwitchAccountCommand: Insufficient length.")
+		return nil, errors.New("insufficient length.").Path("Proxy", "VMess", "Encoding", "Command")
 	}
 	cmd.ValidMin = data[timeStart]
 	return cmd, nil
diff --git a/proxy/vmess/inbound/inbound.go b/proxy/vmess/inbound/inbound.go
index 3280aaeeb..308d45c6b 100644
--- a/proxy/vmess/inbound/inbound.go
+++ b/proxy/vmess/inbound/inbound.go
@@ -82,7 +82,7 @@ type Handler struct {
 func New(ctx context.Context, config *Config) (*Handler, error) {
 	space := app.SpaceFromContext(ctx)
 	if space == nil {
-		return nil, errors.New("VMess|Inbound: No space in context.")
+		return nil, errors.New("no space in context").Path("Proxy", "VMess", "Inbound")
 	}
 
 	allowedClients := vmess.NewTimedUserValidator(ctx, protocol.DefaultIDHash)
@@ -100,7 +100,7 @@ func New(ctx context.Context, config *Config) (*Handler, error) {
 	space.OnInitialize(func() error {
 		handler.inboundHandlerManager = proxyman.InboundHandlerManagerFromSpace(space)
 		if handler.inboundHandlerManager == nil {
-			return errors.New("VMess|Inbound: InboundHandlerManager is not found is space.")
+			return errors.New("InboundHandlerManager is not found is space").Path("Proxy", "VMess", "Inbound")
 		}
 		return nil
 	})
@@ -180,12 +180,12 @@ func (v *Handler) Process(ctx context.Context, network net.Network, connection i
 	if err != nil {
 		if errors.Cause(err) != io.EOF {
 			log.Access(connection.RemoteAddr(), "", log.AccessRejected, err)
-			log.Trace(errors.New("VMess|Inbound: Invalid request from ", connection.RemoteAddr(), ": ", err))
+			log.Trace(errors.New("invalid request from ", connection.RemoteAddr(), ": ", err).Path("Proxy", "VMess", "Inbound"))
 		}
 		return err
 	}
 	log.Access(connection.RemoteAddr(), request.Destination(), log.AccessAccepted, "")
-	log.Trace(errors.New("VMess|Inbound: Received request for ", request.Destination()))
+	log.Trace(errors.New("received request for ", request.Destination()).Path("Proxy", "VMess", "Inbound"))
 
 	connection.SetReadDeadline(time.Time{})
 
@@ -238,7 +238,7 @@ func (v *Handler) generateCommand(ctx context.Context, request *protocol.Request
 		if v.inboundHandlerManager != nil {
 			handler, err := v.inboundHandlerManager.GetHandler(ctx, tag)
 			if err != nil {
-				log.Trace(errors.New("VMess|Inbound: Failed to get detour handler: ", tag, err).AtWarning())
+				log.Trace(errors.New("failed to get detour handler: ", tag, err).AtWarning().Path("Proxy", "VMess", "Inbound"))
 				return nil
 			}
 			proxyHandler, port, availableMin := handler.GetRandomInboundProxy()
@@ -248,7 +248,7 @@ func (v *Handler) generateCommand(ctx context.Context, request *protocol.Request
 					availableMin = 255
 				}
 
-				log.Trace(errors.New("VMess|Inbound: Pick detour handler for port ", port, " for ", availableMin, " minutes."))
+				log.Trace(errors.New("pick detour handler for port ", port, " for ", availableMin, " minutes.").Path("Proxy", "VMess", "Inbound").AtDebug())
 				user := inboundHandler.GetUser(request.User.Email)
 				if user == nil {
 					return nil
diff --git a/proxy/vmess/outbound/outbound.go b/proxy/vmess/outbound/outbound.go
index 6a466d4da..d8654925a 100644
--- a/proxy/vmess/outbound/outbound.go
+++ b/proxy/vmess/outbound/outbound.go
@@ -30,7 +30,7 @@ type Handler struct {
 func New(ctx context.Context, config *Config) (*Handler, error) {
 	space := app.SpaceFromContext(ctx)
 	if space == nil {
-		return nil, errors.New("VMess|Outbound: No space in context.")
+		return nil, errors.New("no space in context.").Path("Proxy", "VMess", "Outbound")
 	}
 
 	serverList := protocol.NewServerList()
@@ -61,15 +61,15 @@ func (v *Handler) Process(ctx context.Context, outboundRay ray.OutboundRay, dial
 		return nil
 	})
 	if err != nil {
-		return errors.New("VMess|Outbound: Failed to find an available destination.").Base(err).AtWarning()
+		return errors.New("failed to find an available destination").Base(err).AtWarning().Path("Proxy", "VMess", "Outbound")
 	}
 	defer conn.Close()
 
 	target, ok := proxy.TargetFromContext(ctx)
 	if !ok {
-		return errors.New("VMess|Outbound: Target not specified.")
+		return errors.New("target not specified").Path("Proxy", "VMess", "Outbound").AtError()
 	}
-	log.Trace(errors.New("VMess|Outbound: Tunneling request to ", target, " via ", rec.Destination()))
+	log.Trace(errors.New("tunneling request to ", target, " via ", rec.Destination()).Path("Proxy", "VMess", "Outbound"))
 
 	command := protocol.RequestCommandTCP
 	if target.Network == net.Network_UDP {
@@ -86,7 +86,7 @@ func (v *Handler) Process(ctx context.Context, outboundRay ray.OutboundRay, dial
 
 	rawAccount, err := request.User.GetTypedAccount()
 	if err != nil {
-		return errors.New("VMess|Outbound: Failed to get user account.").Base(err).AtWarning()
+		return errors.New("failed to get user account").Base(err).AtWarning().Path("Proxy", "VMess", "Outbound")
 	}
 	account := rawAccount.(*vmess.InternalAccount)
 	request.Security = account.Security
@@ -109,11 +109,11 @@ func (v *Handler) Process(ctx context.Context, outboundRay ray.OutboundRay, dial
 		bodyWriter := session.EncodeRequestBody(request, writer)
 		firstPayload, err := input.ReadTimeout(time.Millisecond * 500)
 		if err != nil && err != buf.ErrReadTimeout {
-			return errors.New("failed to get first payload").Base(err).Path("VMess", "Outbound")
+			return errors.New("failed to get first payload").Base(err).Path("Proxy", "VMess", "Outbound")
 		}
 		if !firstPayload.IsEmpty() {
 			if err := bodyWriter.Write(firstPayload); err != nil {
-				return errors.New("failed to write first payload").Base(err).Path("VMess", "Outbound")
+				return errors.New("failed to write first payload").Base(err).Path("Proxy", "VMess", "Outbound")
 			}
 			firstPayload.Release()
 		}
@@ -159,7 +159,7 @@ func (v *Handler) Process(ctx context.Context, outboundRay ray.OutboundRay, dial
 	})
 
 	if err := signal.ErrorOrFinish2(ctx, requestDone, responseDone); err != nil {
-		return errors.New("connection ends").Base(err).Path("VMess", "Outbound")
+		return errors.New("connection ends").Base(err).Path("Proxy", "VMess", "Outbound")
 	}
 	runtime.KeepAlive(timer)
 
diff --git a/transport/internet/dialer.go b/transport/internet/dialer.go
index 0e9c24caf..f087bb41d 100644
--- a/transport/internet/dialer.go
+++ b/transport/internet/dialer.go
@@ -16,7 +16,7 @@ var (
 
 func RegisterTransportDialer(protocol TransportProtocol, dialer Dialer) error {
 	if _, found := transportDialerCache[protocol]; found {
-		return errors.New("Internet|Dialer: ", protocol, " dialer already registered.")
+		return errors.New(protocol, " dialer already registered").AtError().Path("Transport", "Internet")
 	}
 	transportDialerCache[protocol] = dialer
 	return nil
@@ -40,14 +40,14 @@ func Dial(ctx context.Context, dest v2net.Destination) (Connection, error) {
 		}
 		dialer := transportDialerCache[protocol]
 		if dialer == nil {
-			return nil, errors.New("Internet|Dialer: ", protocol, " dialer not registered.")
+			return nil, errors.New(protocol, " dialer not registered").AtError().Path("Transport", "Internet")
 		}
 		return dialer(ctx, dest)
 	}
 
 	udpDialer := transportDialerCache[TransportProtocol_UDP]
 	if udpDialer == nil {
-		return nil, errors.New("Internet|Dialer: UDP dialer not registered.")
+		return nil, errors.New("UDP dialer not registered").AtError().Path("Transport", "Internet")
 	}
 	return udpDialer(ctx, dest)
 }
diff --git a/transport/internet/kcp/connection.go b/transport/internet/kcp/connection.go
index d59b162ad..4ddb323b1 100644
--- a/transport/internet/kcp/connection.go
+++ b/transport/internet/kcp/connection.go
@@ -198,7 +198,7 @@ type Connection struct {
 
 // NewConnection create a new KCP connection between local and remote.
 func NewConnection(conv uint16, sysConn SystemConnection, config *Config) *Connection {
-	log.Trace(errors.New("KCP|Connection: creating connection ", conv))
+	log.Trace(errors.New("creating connection ", conv).Path("Transport", "Internet", "mKCP", "Connection"))
 
 	conn := &Connection{
 		conv:       conv,
@@ -335,7 +335,7 @@ func (v *Connection) SetState(state State) {
 	current := v.Elapsed()
 	atomic.StoreInt32((*int32)(&v.state), int32(state))
 	atomic.StoreUint32(&v.stateBeginTime, current)
-	log.Trace(errors.New("KCP|Connection: #", v.conv, " entering state ", state, " at ", current).AtDebug())
+	log.Trace(errors.New("#", v.conv, " entering state ", state, " at ", current).AtDebug().Path("Transport", "Internet", "mKCP", "Connection"))
 
 	switch state {
 	case StateReadyToClose:
@@ -372,7 +372,7 @@ func (v *Connection) Close() error {
 	if state.Is(StateReadyToClose, StateTerminating, StateTerminated) {
 		return ErrClosedConnection
 	}
-	log.Trace(errors.New("KCP|Connection: Closing connection to ", v.conn.RemoteAddr()))
+	log.Trace(errors.New("closing connection to ", v.conn.RemoteAddr()).Path("Transport", "Internet", "mKCP", "Connection"))
 
 	if state == StateActive {
 		v.SetState(StateReadyToClose)
@@ -441,7 +441,7 @@ func (v *Connection) Terminate() {
 	if v == nil {
 		return
 	}
-	log.Trace(errors.New("KCP|Connection: Terminating connection to ", v.RemoteAddr()))
+	log.Trace(errors.New("terminating connection to ", v.RemoteAddr()).Path("Transport", "Internet", "mKCP", "Connection"))
 
 	//v.SetState(StateTerminated)
 	v.OnDataInput()
@@ -531,7 +531,7 @@ func (v *Connection) flush() {
 	}
 
 	if v.State() == StateTerminating {
-		log.Trace(errors.New("KCP|Connection: #", v.conv, " sending terminating cmd.").AtDebug())
+		log.Trace(errors.New("#", v.conv, " sending terminating cmd.").AtDebug().Path("Transport", "Internet", "mKCP", "Connection"))
 		v.Ping(current, CommandTerminate)
 
 		if current-atomic.LoadUint32(&v.stateBeginTime) > 8000 {