diff --git a/chain/tee.go b/chain/tee.go
index 223a64b..6c6f408 100755
--- a/chain/tee.go
+++ b/chain/tee.go
@@ -43,11 +43,13 @@ func (c *chainClient) QueryTeeWorkerMap(puk []byte) (pattern.TeeWorkerInfo, erro
 
 	key, err := types.CreateStorageKey(c.metadata, pattern.TEEWORKER, pattern.TEEWORKERMAP, owner)
 	if err != nil {
+		err = fmt.Errorf("rpc err: [%s] [st] [%s.%s] CreateStorageKey: %v", c.GetCurrentRpcAddr(), pattern.TEEWORKER, pattern.TEEWORKERMAP, err)
 		return data, errors.Wrap(err, "[CreateStorageKey]")
 	}
 
 	ok, err := c.api.RPC.State.GetStorageLatest(key, &data)
 	if err != nil {
+		err = fmt.Errorf("rpc err: [%s] [st] [%s.%s] GetStorageLatest: %v", c.GetCurrentRpcAddr(), pattern.TEEWORKER, pattern.TEEWORKERMAP, err)
 		return data, errors.Wrap(err, "[GetStorageLatest]")
 	}
 	if !ok {
@@ -108,11 +110,13 @@ func (c *chainClient) QueryTeePodr2Puk() ([]byte, error) {
 
 	key, err := types.CreateStorageKey(c.metadata, pattern.TEEWORKER, pattern.TEEPODR2PK)
 	if err != nil {
+		err = fmt.Errorf("rpc err: [%s] [st] [%s.%s] CreateStorageKey: %v", c.GetCurrentRpcAddr(), pattern.TEEWORKER, pattern.TEEPODR2PK, err)
 		return nil, errors.Wrap(err, "[CreateStorageKey]")
 	}
 
 	ok, err := c.api.RPC.State.GetStorageLatest(key, &data)
 	if err != nil {
+		err = fmt.Errorf("rpc err: [%s] [st] [%s.%s] GetStorageLatest: %v", c.GetCurrentRpcAddr(), pattern.TEEWORKER, pattern.TEEPODR2PK, err)
 		return nil, errors.Wrap(err, "[GetStorageLatest]")
 	}
 	if !ok {
@@ -138,11 +142,13 @@ func (c *chainClient) QueryAllTeeWorkerMap() ([]pattern.TeeWorkerInfo, error) {
 	key := createPrefixedKey(pattern.TEEWORKER, pattern.TEEWORKERMAP)
 	keys, err := c.api.RPC.State.GetKeysLatest(key)
 	if err != nil {
+		err = fmt.Errorf("rpc err: [%s] [st] [%s.%s] GetKeysLatest: %v", c.GetCurrentRpcAddr(), pattern.TEEWORKER, pattern.TEEWORKERMAP, err)
 		return list, errors.Wrap(err, "[GetKeysLatest]")
 	}
 
 	set, err := c.api.RPC.State.QueryStorageAtLatest(keys)
 	if err != nil {
+		err = fmt.Errorf("rpc err: [%s] [st] [%s.%s] QueryStorageAtLatest: %v", c.GetCurrentRpcAddr(), pattern.TEEWORKER, pattern.TEEWORKERMAP, err)
 		return list, errors.Wrap(err, "[QueryStorageAtLatest]")
 	}
 
@@ -150,7 +156,7 @@ func (c *chainClient) QueryAllTeeWorkerMap() ([]pattern.TeeWorkerInfo, error) {
 		for _, change := range elem.Changes {
 			var teeWorker pattern.TeeWorkerInfo
 			if err := codec.Decode(change.StorageData, &teeWorker); err != nil {
-				fmt.Println(err)
+				log.Println(err)
 				continue
 			}
 			list = append(list, teeWorker)
@@ -189,3 +195,34 @@ func (c *chainClient) QueryAllTeeInfo() ([]pattern.TeeInfo, error) {
 	}
 	return results, nil
 }
+
+func (c *chainClient) QueryTeeWorkEndpoint() (string, error) {
+	defer func() {
+		if err := recover(); err != nil {
+			log.Println(utils.RecoverError(err))
+		}
+	}()
+
+	var data types.Text
+
+	if !c.GetChainState() {
+		return "", pattern.ERR_RPC_CONNECTION
+	}
+
+	key, err := types.CreateStorageKey(c.metadata, pattern.TEEWORKER, pattern.TEEEndpoints)
+	if err != nil {
+		err = fmt.Errorf("rpc err: [%s] [st] [%s.%s] CreateStorageKey: %v", c.GetCurrentRpcAddr(), pattern.TEEWORKER, pattern.TEEEndpoints, err)
+		return "", errors.Wrap(err, "[CreateStorageKey]")
+	}
+
+	ok, err := c.api.RPC.State.GetStorageLatest(key, &data)
+	if err != nil {
+		err = fmt.Errorf("rpc err: [%s] [st] [%s.%s] GetStorageLatest: %v", c.GetCurrentRpcAddr(), pattern.TEEWORKER, pattern.TEEEndpoints, err)
+		return "", errors.Wrap(err, "[GetStorageLatest]")
+	}
+	if !ok {
+		return "", pattern.ERR_RPC_EMPTY_VALUE
+	}
+
+	return string(data), nil
+}
diff --git a/core/event/events.go b/core/event/events.go
index 49e3102..4e74689 100755
--- a/core/event/events.go
+++ b/core/event/events.go
@@ -321,19 +321,6 @@ type Event_LeaseExpireIn24Hours struct {
 }
 
 // ------------------------TEE Worker--------------------
-type Event_RegistrationTeeWorker struct {
-	Phase  types.Phase
-	Acc    types.AccountID
-	PeerId pattern.PeerId
-	Topics []types.Hash
-}
-
-type Event_UpdatePeerId struct {
-	Phase  types.Phase
-	Acc    types.AccountID
-	Topics []types.Hash
-}
-
 type Event_Exit struct {
 	Phase  types.Phase
 	Acc    types.AccountID
@@ -517,12 +504,9 @@ type EventRecords struct {
 	StorageHandler_LeaseExpireIn24Hours []Event_LeaseExpireIn24Hours
 
 	// TeeWorker
-	TeeWorker_RegistrationTeeWorker []Event_RegistrationTeeWorker
-	TeeWorker_UpdatePeerId          []Event_UpdatePeerId
-	TeeWorker_Exit                  []Event_Exit
-	TeeWorker_MasterKeyLaunched     []Event_MasterKeyLaunched
-	TeeWorker_KeyfairyAdded         []Event_KeyfairyAdded
-
+	TeeWorker_Exit                          []Event_Exit
+	TeeWorker_MasterKeyLaunched             []Event_MasterKeyLaunched
+	TeeWorker_KeyfairyAdded                 []Event_KeyfairyAdded
 	TeeWorker_WorkerUpdated                 []Event_WorkerUpdated
 	TeeWorker_MasterKeyRotated              []Event_MasterKeyRotated
 	TeeWorker_MasterKeyRotationFailed       []Event_MasterKeyRotationFailed
diff --git a/core/event/eventsName.go b/core/event/eventsName.go
index a1c8285..9718743 100755
--- a/core/event/eventsName.go
+++ b/core/event/eventsName.go
@@ -64,8 +64,6 @@ const (
 	StorageHandlerRenewalSpace   = "StorageHandler.RenewalSpace"
 
 	// TeeWorker
-	TeeWorkerRegistrationTeeWorker         = "TeeWorker.RegistrationTeeWorker"
-	TeeWorkerUpdatePeerId                  = "TeeWorker.UpdatePeerId"
 	TeeWorkerExit                          = "TeeWorker.Exit"
 	TeeWorkerMasterKeyLaunched             = "TeeWorker.MasterKeyLaunched"
 	TeeWorkerKeyfairyAdded                 = "TeeWorker.KeyfairyAdded"
diff --git a/core/pattern/pattern.go b/core/pattern/pattern.go
index b0f1b90..2201e49 100755
--- a/core/pattern/pattern.go
+++ b/core/pattern/pattern.go
@@ -77,6 +77,7 @@ const (
 	// TEEWORKER
 	TEEWORKERMAP = "TeeWorkerMap"
 	TEEPODR2PK   = "TeePodr2Pk"
+	TEEEndpoints = "Endpoints"
 
 	// FILEBANK
 	FILE           = "File"
diff --git a/core/sdk/sdk.go b/core/sdk/sdk.go
index 4291ae9..708280f 100755
--- a/core/sdk/sdk.go
+++ b/core/sdk/sdk.go
@@ -213,6 +213,8 @@ type SDK interface {
 	QueryAllTeeWorkerMap() ([]pattern.TeeWorkerInfo, error)
 	// QueryAllTeeInfo queries the information of all tee workers.
 	QueryAllTeeInfo() ([]pattern.TeeInfo, error)
+	// QueryTeeWorkEndpoint queries the endpoint of tee workers.
+	QueryTeeWorkEndpoint() (string, error)
 
 	// System