diff --git a/main.go b/main.go
index e71abf4..f6ba6fb 100644
--- a/main.go
+++ b/main.go
@@ -6,6 +6,7 @@ import (
 
 	log "github.com/sirupsen/logrus"
 	"gitlink.org.cn/cloudream/coordinator/config"
+	"gitlink.org.cn/cloudream/coordinator/services"
 	mydb "gitlink.org.cn/cloudream/db"
 	rasvr "gitlink.org.cn/cloudream/rabbitmq/server"
 	"gitlink.org.cn/cloudream/utils/logger"
@@ -29,7 +30,7 @@ func main() {
 		log.Fatalf("new db failed, err: %s", err.Error())
 	}
 
-	cmdSvr, err := rasvr.NewCoordinatorServer(NewCommandService(db))
+	cmdSvr, err := rasvr.NewCoordinatorServer(services.NewService(db))
 	if err != nil {
 		log.Fatalf("new coordinator server failed, err: %s", err.Error())
 	}
diff --git a/services/bucket.go b/services/bucket.go
new file mode 100644
index 0000000..659c2c0
--- /dev/null
+++ b/services/bucket.go
@@ -0,0 +1,48 @@
+package services
+
+import (
+	log "github.com/sirupsen/logrus"
+	"gitlink.org.cn/cloudream/db/model"
+	ramsg "gitlink.org.cn/cloudream/rabbitmq/message"
+	"gitlink.org.cn/cloudream/utils/consts/errorcode"
+)
+
+func (svc *Service) GetBucket(userID int, bucketID int) (model.Bucket, error) {
+	// TODO
+	panic("not implement yet")
+}
+
+func (svc *Service) GetUserBuckets(msg *ramsg.GetUserBucketsCommand) ramsg.GetUserBucketsResp {
+	buckets, err := svc.db.GetUserBuckets(msg.UserID)
+
+	if err != nil {
+		log.WithField("UserID", msg.UserID).
+			Warnf("get user buckets failed, err: %s", err.Error())
+		return ramsg.NewGetUserBucketsRespFailed(errorcode.OPERATION_FAILED, "get all buckets failed")
+	}
+
+	return ramsg.NewGetUserBucketsRespOK(buckets)
+}
+
+func (svc *Service) GetBucketObjects(msg *ramsg.GetBucketObjectsCommand) ramsg.GetBucketObjectsResp {
+	objects, err := svc.db.GetBucketObjects(msg.UserID, msg.BucketID)
+
+	if err != nil {
+		log.WithField("UserID", msg.UserID).
+			WithField("BucketID", msg.BucketID).
+			Warnf("get bucket objects failed, err: %s", err.Error())
+		return ramsg.NewGetBucketObjectsRespFailed(errorcode.OPERATION_FAILED, "get all buckets failed")
+	}
+
+	return ramsg.NewGetBucketObjectsRespOK(objects)
+}
+
+func (svc *Service) CreateBucket(userID int, bucketName string) (model.Bucket, error) {
+	// TODO
+	panic("not implement yet")
+}
+
+func (src *Service) DeleteBucket(userID int, bucketID int) error {
+	// TODO
+	panic("not implement yet")
+}
diff --git a/command_service.go b/services/command_service.go
similarity index 92%
rename from command_service.go
rename to services/command_service.go
index d319edf..ce19cf8 100644
--- a/command_service.go
+++ b/services/command_service.go
@@ -1,8 +1,7 @@
-package main
+package services
 
 import (
 	log "github.com/sirupsen/logrus"
-	mydb "gitlink.org.cn/cloudream/db"
 	ramsg "gitlink.org.cn/cloudream/rabbitmq/message"
 	"gitlink.org.cn/cloudream/utils"
 
@@ -10,17 +9,7 @@ import (
 	"gitlink.org.cn/cloudream/utils/consts/errorcode"
 )
 
-type CommandService struct {
-	db *mydb.DB
-}
-
-func NewCommandService(db *mydb.DB) *CommandService {
-	return &CommandService{
-		db: db,
-	}
-}
-
-func (service *CommandService) Read(msg *ramsg.ReadCommand) ramsg.ReadResp {
+func (service *Service) Read(msg *ramsg.ReadCommand) ramsg.ReadResp {
 	var hashes []string
 	blockIDs := []int{0}
 
@@ -106,7 +95,7 @@ func (service *CommandService) Read(msg *ramsg.ReadCommand) ramsg.ReadResp {
 	)
 }
 
-func (service *CommandService) RepWrite(msg *ramsg.RepWriteCommand) ramsg.WriteResp {
+func (service *Service) RepWrite(msg *ramsg.RepWriteCommand) ramsg.WriteResp {
 	// TODO 需要在此处判断同名对象是否存在。等到WriteRepHash时再判断一次。
 	// 此次的判断只作为参考，具体是否成功还是看WriteRepHash的结果
 
@@ -138,7 +127,7 @@ func (service *CommandService) RepWrite(msg *ramsg.RepWriteCommand) ramsg.WriteR
 	return ramsg.NewCoorWriteRespOK(ids, ips)
 }
 
-func (service *CommandService) WriteRepHash(msg *ramsg.WriteRepHashCommand) ramsg.WriteHashResp {
+func (service *Service) WriteRepHash(msg *ramsg.WriteRepHashCommand) ramsg.WriteHashResp {
 	_, err := service.db.CreateRepObject(msg.BucketID, msg.ObjectName, msg.FileSizeInBytes, msg.ReplicateNumber, msg.NodeIDs, msg.Hashes)
 	if err != nil {
 		log.WithField("BucketName", msg.BucketID).
@@ -150,7 +139,7 @@ func (service *CommandService) WriteRepHash(msg *ramsg.WriteRepHashCommand) rams
 	return ramsg.NewCoorWriteHashRespOK()
 }
 
-func (service *CommandService) Move(msg *ramsg.MoveCommand) ramsg.MoveResp {
+func (service *Service) Move(msg *ramsg.MoveCommand) ramsg.MoveResp {
 	//查询数据库，获取冗余类型，冗余参数
 	//jh:使用command中的bucketname和objectname查询对象表,获得redundancy，EcName,fileSizeInBytes
 	//-若redundancy是rep，查询对象副本表, 获得repHash
@@ -239,11 +228,11 @@ func (service *CommandService) Move(msg *ramsg.MoveCommand) ramsg.MoveResp {
 	)
 }
 
-func (service *CommandService) TempCacheReport(msg *ramsg.TempCacheReport) {
+func (service *Service) TempCacheReport(msg *ramsg.TempCacheReport) {
 	service.db.BatchInsertOrUpdateCache(msg.Hashes, msg.NodeID)
 }
 
-func (service *CommandService) AgentStatusReport(msg *ramsg.AgentStatusReport) {
+func (service *Service) AgentStatusReport(msg *ramsg.AgentStatusReport) {
 	//jh：根据command中的Ip，插入节点延迟表，和节点表的NodeStatus
 	//根据command中的Ip，插入节点延迟表
 
diff --git a/command_service_ec.go b/services/command_service_ec.go
similarity index 92%
rename from command_service_ec.go
rename to services/command_service_ec.go
index beb4f30..49db386 100644
--- a/command_service_ec.go
+++ b/services/command_service_ec.go
@@ -1,10 +1,10 @@
-package main
+package services
 
 import (
 	ramsg "gitlink.org.cn/cloudream/rabbitmq/message"
 )
 
-func (service *CommandService) ECWrite(msg *ramsg.ECWriteCommand) ramsg.WriteResp {
+func (service *Service) ECWrite(msg *ramsg.ECWriteCommand) ramsg.WriteResp {
 	panic("not implement yet!")
 
 	/*
@@ -56,7 +56,7 @@ func (service *CommandService) ECWrite(msg *ramsg.ECWriteCommand) ramsg.WriteRes
 	*/
 }
 
-func (service *CommandService) WriteECHash(msg *ramsg.WriteECHashCommand) ramsg.WriteHashResp {
+func (service *Service) WriteECHash(msg *ramsg.WriteECHashCommand) ramsg.WriteHashResp {
 	panic("not implement yet!")
 
 	/*
diff --git a/services/service.go b/services/service.go
new file mode 100644
index 0000000..9bc1d23
--- /dev/null
+++ b/services/service.go
@@ -0,0 +1,13 @@
+package services
+
+import mydb "gitlink.org.cn/cloudream/db"
+
+type Service struct {
+	db *mydb.DB
+}
+
+func NewService(db *mydb.DB) *Service {
+	return &Service{
+		db: db,
+	}
+}