diff --git a/drivers/plugins/dubbo2-to-http/to-http.go b/drivers/plugins/dubbo2-to-http/to-http.go
index 08794386..47291f03 100644
--- a/drivers/plugins/dubbo2-to-http/to-http.go
+++ b/drivers/plugins/dubbo2-to-http/to-http.go
@@ -2,6 +2,7 @@ package dubbo2_to_http
 
 import (
 	"github.com/eolinker/apinto/drivers"
+	"github.com/eolinker/apinto/entries/ctx_key"
 	"github.com/eolinker/eosc"
 	"github.com/eolinker/eosc/eocontext"
 	dubbo2_context "github.com/eolinker/eosc/eocontext/dubbo2-context"
@@ -21,13 +22,13 @@ type ToHttp struct {
 
 func (t *ToHttp) DoDubboFilter(ctx dubbo2_context.IDubbo2Context, next eocontext.IChain) (err error) {
 
-	retryValue := ctx.Value(eocontext.CtxKeyRetry)
+	retryValue := ctx.Value(ctx_key.CtxKeyRetry)
 	retry, ok := retryValue.(int)
 	if !ok {
 		retry = 0
 	}
 
-	timeoutValue := ctx.Value(eocontext.CtxKeyTimeout)
+	timeoutValue := ctx.Value(ctx_key.CtxKeyTimeout)
 	timeout, ok := timeoutValue.(time.Duration)
 	if !ok {
 		timeout = 3000 * time.Millisecond
diff --git a/drivers/plugins/gRPC-to-http/complete.go b/drivers/plugins/gRPC-to-http/complete.go
index 4bab4c83..22bb7703 100644
--- a/drivers/plugins/gRPC-to-http/complete.go
+++ b/drivers/plugins/gRPC-to-http/complete.go
@@ -3,6 +3,7 @@ package grpc_to_http
 import (
 	"errors"
 	"fmt"
+	"github.com/eolinker/apinto/entries/ctx_key"
 	"net/url"
 	"strings"
 	"time"
@@ -62,13 +63,13 @@ func (h *complete) Complete(org eocontext.EoContext) error {
 		return err
 	}
 
-	retryValue := ctx.Value(eocontext.CtxKeyRetry)
+	retryValue := ctx.Value(ctx_key.CtxKeyRetry)
 	retry, ok := retryValue.(int)
 	if !ok {
 		retry = 0
 	}
 
-	timeoutValue := ctx.Value(eocontext.CtxKeyTimeout)
+	timeoutValue := ctx.Value(ctx_key.CtxKeyTimeout)
 	timeout, ok := timeoutValue.(time.Duration)
 	if !ok {
 		timeout = defaultTimeout
diff --git a/drivers/plugins/http-to-dubbo2/to-dubbo2.go b/drivers/plugins/http-to-dubbo2/to-dubbo2.go
index e0cd20a7..3bb95d5c 100644
--- a/drivers/plugins/http-to-dubbo2/to-dubbo2.go
+++ b/drivers/plugins/http-to-dubbo2/to-dubbo2.go
@@ -2,6 +2,7 @@ package http_to_dubbo2
 
 import (
 	"github.com/eolinker/apinto/drivers"
+	"github.com/eolinker/apinto/entries/ctx_key"
 	"github.com/eolinker/eosc"
 	"github.com/eolinker/eosc/eocontext"
 	http_context "github.com/eolinker/eosc/eocontext/http-context"
@@ -20,13 +21,13 @@ type ToDubbo2 struct {
 
 func (p *ToDubbo2) DoHttpFilter(ctx http_context.IHttpContext, next eocontext.IChain) error {
 
-	retryValue := ctx.Value(eocontext.CtxKeyRetry)
+	retryValue := ctx.Value(ctx_key.CtxKeyRetry)
 	retry, ok := retryValue.(int)
 	if !ok {
 		retry = 1
 	}
 
-	timeoutValue := ctx.Value(eocontext.CtxKeyTimeout)
+	timeoutValue := ctx.Value(ctx_key.CtxKeyTimeout)
 	timeout, ok := timeoutValue.(time.Duration)
 	if !ok {
 		timeout = 3000 * time.Millisecond
diff --git a/drivers/plugins/http-to-gRPC/complete.go b/drivers/plugins/http-to-gRPC/complete.go
index 2bd98f1a..81cdb4f1 100644
--- a/drivers/plugins/http-to-gRPC/complete.go
+++ b/drivers/plugins/http-to-gRPC/complete.go
@@ -5,6 +5,7 @@ import (
 	"crypto/tls"
 	"encoding/json"
 	"fmt"
+	"github.com/eolinker/apinto/entries/ctx_key"
 	"net/http"
 	"strings"
 	"time"
@@ -87,13 +88,13 @@ func (h *complete) Complete(org eocontext.EoContext) error {
 		return err
 	}
 
-	retryValue := ctx.Value(eocontext.CtxKeyRetry)
+	retryValue := ctx.Value(ctx_key.CtxKeyRetry)
 	retry, ok := retryValue.(int)
 	if !ok {
 		retry = 1
 	}
 
-	timeoutValue := ctx.Value(eocontext.CtxKeyTimeout)
+	timeoutValue := ctx.Value(ctx_key.CtxKeyTimeout)
 	timeout, ok := timeoutValue.(time.Duration)
 	if !ok {
 		timeout = defaultTimeout
diff --git a/drivers/router/dubbo2-router/handler.go b/drivers/router/dubbo2-router/handler.go
index 4b42cb97..d58e688d 100644
--- a/drivers/router/dubbo2-router/handler.go
+++ b/drivers/router/dubbo2-router/handler.go
@@ -2,6 +2,7 @@ package dubbo2_router
 
 import (
 	"errors"
+	"github.com/eolinker/apinto/entries/ctx_key"
 	"time"
 
 	"github.com/eolinker/apinto/drivers/router/dubbo2-router/manager"
@@ -41,8 +42,8 @@ func (d *dubboHandler) ServeHTTP(ctx eocontext.EoContext) {
 	}
 
 	//set retry timeout
-	ctx.WithValue(eocontext.CtxKeyRetry, d.retry)
-	ctx.WithValue(eocontext.CtxKeyTimeout, d.timeout)
+	ctx.WithValue(ctx_key.CtxKeyRetry, d.retry)
+	ctx.WithValue(ctx_key.CtxKeyTimeout, d.timeout)
 
 	//Set Label
 	ctx.SetLabel("api", d.routerName)
diff --git a/drivers/router/grpc-router/handler.go b/drivers/router/grpc-router/handler.go
index bf0b591a..1cd69c1a 100644
--- a/drivers/router/grpc-router/handler.go
+++ b/drivers/router/grpc-router/handler.go
@@ -2,6 +2,7 @@ package grpc_router
 
 import (
 	"github.com/eolinker/apinto/drivers/router/grpc-router/manager"
+	"github.com/eolinker/apinto/entries/ctx_key"
 	"github.com/eolinker/apinto/service"
 	grpc_context "github.com/eolinker/eosc/eocontext/grpc-context"
 	"google.golang.org/grpc/codes"
@@ -40,8 +41,8 @@ func (h *grpcRouter) ServeHTTP(ctx eocontext.EoContext) {
 	}
 
 	//set retry timeout
-	ctx.WithValue(eocontext.CtxKeyRetry, h.retry)
-	ctx.WithValue(eocontext.CtxKeyTimeout, h.timeout)
+	ctx.WithValue(ctx_key.CtxKeyRetry, h.retry)
+	ctx.WithValue(ctx_key.CtxKeyTimeout, h.timeout)
 
 	//Set Label
 	ctx.SetLabel("api", h.routerName)
diff --git a/drivers/router/http-router/http-complete/complete.go b/drivers/router/http-router/http-complete/complete.go
index d3c401cc..bf317423 100644
--- a/drivers/router/http-router/http-complete/complete.go
+++ b/drivers/router/http-router/http-complete/complete.go
@@ -3,6 +3,7 @@ package http_complete
 import (
 	"errors"
 	"fmt"
+	"github.com/eolinker/apinto/entries/ctx_key"
 	"strconv"
 	"strings"
 	"time"
@@ -55,13 +56,13 @@ func (h *HttpComplete) Complete(org eocontext.EoContext) error {
 	}
 	timeOut := app.TimeOut()
 
-	retryValue := ctx.Value(eocontext.CtxKeyRetry)
+	retryValue := ctx.Value(ctx_key.CtxKeyRetry)
 	retry, ok := retryValue.(int)
 	if !ok {
 		retry = 1
 	}
 
-	timeoutValue := ctx.Value(eocontext.CtxKeyTimeout)
+	timeoutValue := ctx.Value(ctx_key.CtxKeyTimeout)
 	timeout, ok := timeoutValue.(time.Duration)
 	if !ok {
 		timeout = 3000 * time.Millisecond
diff --git a/drivers/router/http-router/http-handler.go b/drivers/router/http-router/http-handler.go
index f9194336..bddd0427 100644
--- a/drivers/router/http-router/http-handler.go
+++ b/drivers/router/http-router/http-handler.go
@@ -1,6 +1,7 @@
 package http_router
 
 import (
+	"github.com/eolinker/apinto/entries/ctx_key"
 	"net/http"
 	"time"
 
@@ -54,8 +55,8 @@ func (h *httpHandler) ServeHTTP(ctx eocontext.EoContext) {
 		ctx = wsCtx
 	}
 	//set retry timeout
-	ctx.WithValue(eocontext.CtxKeyRetry, h.retry)
-	ctx.WithValue(eocontext.CtxKeyTimeout, h.timeout)
+	ctx.WithValue(ctx_key.CtxKeyRetry, h.retry)
+	ctx.WithValue(ctx_key.CtxKeyTimeout, h.timeout)
 
 	//Set Label
 	ctx.SetLabel("api", h.routerName)
diff --git a/entries/ctx_key/ctx_key.go b/entries/ctx_key/ctx_key.go
new file mode 100644
index 00000000..e34e341b
--- /dev/null
+++ b/entries/ctx_key/ctx_key.go
@@ -0,0 +1,6 @@
+package ctx_key
+
+const (
+	CtxKeyRetry   = "retry"
+	CtxKeyTimeout = "timeout"
+)
diff --git a/node/http-context/context.go b/node/http-context/context.go
index f1acca8a..75bc050b 100644
--- a/node/http-context/context.go
+++ b/node/http-context/context.go
@@ -3,6 +3,7 @@ package http_context
 import (
 	"context"
 	"fmt"
+	"github.com/eolinker/apinto/entries/ctx_key"
 	"net"
 	"strings"
 	"time"
@@ -211,8 +212,8 @@ func (ctx *HttpContext) Clone() (eoscContext.EoContext, error) {
 
 	//记录请求时间
 	copyContext.ctx = context.WithValue(ctx.Context(), http_service.KeyCloneCtx, true)
-	copyContext.WithValue(eoscContext.CtxKeyRetry, 0)
-	copyContext.WithValue(eoscContext.CtxKeyRetry, time.Duration(0))
+	copyContext.WithValue(ctx_key.CtxKeyRetry, 0)
+	copyContext.WithValue(ctx_key.CtxKeyRetry, time.Duration(0))
 	return copyContext, nil
 }