diff --git a/node/delete_bucket.go b/node/delete_bucket.go
index 750fd30..a3ed528 100644
--- a/node/delete_bucket.go
+++ b/node/delete_bucket.go
@@ -15,7 +15,7 @@ import (
 	"github.com/gin-gonic/gin"
 )
 
-func (n *Node) Delete_bucket(c *gin.Context) {
+func (n *Node) DeleteBucket(c *gin.Context) {
 	if !checkDeOSSStatus(n, c) {
 		return
 	}
@@ -44,7 +44,7 @@ func (n *Node) Delete_bucket(c *gin.Context) {
 		return
 	}
 
-	blockHash, err := n.DeleteBucket(pkey, bucketName)
+	blockHash, err := n.ChainClient.DeleteBucket(pkey, bucketName)
 	if err != nil {
 		n.Logdel("err", clientIp+" DeleteBucket failed: "+err.Error())
 		c.JSON(http.StatusBadRequest, err.Error())
diff --git a/node/delete_file.go b/node/delete_file.go
index c247cfa..6bd6e43 100644
--- a/node/delete_file.go
+++ b/node/delete_file.go
@@ -15,7 +15,7 @@ import (
 )
 
 // delHandle is used to delete buckets or files
-func (n *Node) Delete_file(c *gin.Context) {
+func (n *Node) DeleteFile(c *gin.Context) {
 	if !checkDeOSSStatus(n, c) {
 		return
 	}
@@ -39,7 +39,7 @@ func (n *Node) Delete_file(c *gin.Context) {
 		return
 	}
 
-	blockHash, err := n.DeleteFile(pkey, fid)
+	blockHash, err := n.ChainClient.DeleteFile(pkey, fid)
 	if err != nil {
 		n.Logdel("err", clientIp+" DeleteFile failed: "+err.Error())
 		c.JSON(http.StatusBadRequest, err.Error())
diff --git a/node/download_file.go b/node/download_file.go
index 2fda80c..6968960 100644
--- a/node/download_file.go
+++ b/node/download_file.go
@@ -31,7 +31,7 @@ func init() {
 	}
 }
 
-func (n *Node) Download_file(c *gin.Context) {
+func (n *Node) DownloadFile(c *gin.Context) {
 	if _, ok := <-max_concurrent_get_ch; !ok {
 		c.JSON(http.StatusTooManyRequests, "server is busy, please try again later.")
 		return
diff --git a/node/get_location.go b/node/get_location.go
index fc3ad74..32fae48 100644
--- a/node/get_location.go
+++ b/node/get_location.go
@@ -34,7 +34,7 @@ type Location struct {
 	Latitude  float64 `json:"latitude"`
 }
 
-func (n *Node) Get_location(c *gin.Context) {
+func (n *Node) GetFileLocation(c *gin.Context) {
 	fid := c.Param(HTTP_ParameterName_Fid)
 
 	clientIp := c.Request.Header.Get("X-Forwarded-For")
diff --git a/node/get_metadata.go b/node/get_metadata.go
index 5467fd8..011d059 100644
--- a/node/get_metadata.go
+++ b/node/get_metadata.go
@@ -28,7 +28,7 @@ type RtnUserBrief struct {
 	BucketName string `json:"bucket_name"`
 }
 
-func (n *Node) Get_metadata(c *gin.Context) {
+func (n *Node) GetFileMetadata(c *gin.Context) {
 	clientIp := c.Request.Header.Get("X-Forwarded-For")
 	if clientIp == "" {
 		clientIp = c.ClientIP()
diff --git a/node/node.go b/node/node.go
index 12233cb..798a890 100644
--- a/node/node.go
+++ b/node/node.go
@@ -75,20 +75,20 @@ func (n *Node) Run() {
 
 	n.Engine.GET("/version", n.Get_version)
 	n.Engine.GET("/bucket", n.Get_bucket)
-	n.Engine.GET(fmt.Sprintf("/metadata/:%s", HTTP_ParameterName_Fid), n.Get_metadata)
-	n.Engine.GET(fmt.Sprintf("/download/:%s", HTTP_ParameterName_Fid), n.Download_file)
+	n.Engine.GET(fmt.Sprintf("/metadata/:%s", HTTP_ParameterName_Fid), n.GetFileMetadata)
+	n.Engine.GET(fmt.Sprintf("/download/:%s", HTTP_ParameterName_Fid), n.DownloadFile)
 	n.Engine.GET(fmt.Sprintf("/canfiles/:%s", HTTP_ParameterName_Fid), n.GetCanFileHandle)
-	n.Engine.GET(fmt.Sprintf("/open/:%s", HTTP_ParameterName_Fid), n.Preview_file)
-	n.Engine.GET(fmt.Sprintf("/location/:%s", HTTP_ParameterName_Fid), n.Get_location)
+	n.Engine.GET(fmt.Sprintf("/open/:%s", HTTP_ParameterName_Fid), n.PreviewFile)
+	n.Engine.GET(fmt.Sprintf("/location/:%s", HTTP_ParameterName_Fid), n.GetFileLocation)
 
-	n.Engine.PUT("/bucket", n.Put_bucket)
-	n.Engine.PUT("/file", n.Put_file)
-	n.Engine.PUT("/object", n.Put_object)
+	n.Engine.PUT("/bucket", n.PutBucket)
+	n.Engine.PUT("/file", n.PutFile)
+	n.Engine.PUT("/object", n.PutObject)
 	n.Engine.PUT(fmt.Sprintf("/resume/:%s", HTTP_ParameterName), n.ResumeUpload)
 	n.Engine.PUT("/chunks", n.PutChunksHandle)
 
-	n.Engine.DELETE(fmt.Sprintf("/file/:%s", HTTP_ParameterName), n.Delete_file)
-	n.Engine.DELETE(fmt.Sprintf("/bucket/:%s", HTTP_ParameterName), n.Delete_bucket)
+	n.Engine.DELETE(fmt.Sprintf("/file/:%s", HTTP_ParameterName), n.DeleteFile)
+	n.Engine.DELETE(fmt.Sprintf("/bucket/:%s", HTTP_ParameterName), n.DeleteBucket)
 
 	n.Engine.GET("/favicon.ico", func(c *gin.Context) {
 		c.Header("Cache-Control", "public, max-age=31536000")
diff --git a/node/open_file.go b/node/open_file.go
index 8a7cf86..880cab0 100644
--- a/node/open_file.go
+++ b/node/open_file.go
@@ -24,7 +24,7 @@ import (
 	"github.com/gin-gonic/gin"
 )
 
-func (n *Node) Preview_file(c *gin.Context) {
+func (n *Node) PreviewFile(c *gin.Context) {
 	if _, ok := <-max_concurrent_get_ch; !ok {
 		c.JSON(http.StatusTooManyRequests, "server is busy, please try again later.")
 		return
diff --git a/node/put_bucket.go b/node/put_bucket.go
index 71ecf48..ac66f2e 100644
--- a/node/put_bucket.go
+++ b/node/put_bucket.go
@@ -19,7 +19,7 @@ import (
 	"github.com/pkg/errors"
 )
 
-func (n *Node) Put_bucket(c *gin.Context) {
+func (n *Node) PutBucket(c *gin.Context) {
 	defer c.Request.Body.Close()
 
 	account := c.Request.Header.Get(HTTPHeader_Account)
diff --git a/node/put_file.go b/node/put_file.go
index c96c1a5..15ab96b 100644
--- a/node/put_file.go
+++ b/node/put_file.go
@@ -36,7 +36,7 @@ func init() {
 	}
 }
 
-func (n *Node) Put_file(c *gin.Context) {
+func (n *Node) PutFile(c *gin.Context) {
 	defer c.Request.Body.Close()
 
 	account := c.Request.Header.Get(HTTPHeader_Account)
diff --git a/node/put_object.go b/node/put_object.go
index 5033f17..b3327f1 100644
--- a/node/put_object.go
+++ b/node/put_object.go
@@ -24,7 +24,7 @@ import (
 	"github.com/pkg/errors"
 )
 
-func (n *Node) Put_object(c *gin.Context) {
+func (n *Node) PutObject(c *gin.Context) {
 	defer c.Request.Body.Close()
 
 	account := c.Request.Header.Get(HTTPHeader_Account)