diff --git a/internal/conversation_msg/conversation_msg.go b/internal/conversation_msg/conversation_msg.go
index 9f6f1bca9..dc85c0a48 100644
--- a/internal/conversation_msg/conversation_msg.go
+++ b/internal/conversation_msg/conversation_msg.go
@@ -5,10 +5,11 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	sdk "github.com/openimsdk/openim-sdk-core/v3/pkg/sdk_params_callback"
 	"math"
 	"sync"
 
+	sdk "github.com/openimsdk/openim-sdk-core/v3/pkg/sdk_params_callback"
+
 	"github.com/openimsdk/openim-sdk-core/v3/pkg/api"
 	"github.com/openimsdk/openim-sdk-core/v3/pkg/cache"
 	"github.com/openimsdk/tools/utils/stringutil"
@@ -924,6 +925,7 @@ func (c *Conversation) batchAddFaceURLAndName(ctx context.Context, conversations
 	if err != nil {
 		return err
 	}
+
 	groups := datautil.SliceToMap(groupInfoList, func(groupInfo *model_struct.LocalGroup) string {
 		return groupInfo.GroupID
 	})
@@ -935,8 +937,10 @@ func (c *Conversation) batchAddFaceURLAndName(ctx context.Context, conversations
 				conversation.FaceURL = v.FaceURL
 				conversation.ShowName = v.Nickname
 			} else {
-				log.ZWarn(ctx, "user info not found", errors.New("user not found"),
-					"userID", conversation.UserID)
+				log.ZWarn(ctx, "user info not found", errors.New("user not found"),"userID", conversation.UserID)
+				
+				conversation.FaceURL = ""
+				conversation.ShowName = "UserNotFound"
 			}
 		} else if conversation.ConversationType == constant.ReadGroupChatType {
 			if v, ok := groups[conversation.GroupID]; ok {
@@ -949,6 +953,7 @@ func (c *Conversation) batchAddFaceURLAndName(ctx context.Context, conversations
 
 		}
 	}
+
 	return nil
 }
 
@@ -979,10 +984,12 @@ func (c *Conversation) batchGetUserNameAndFaceURL(ctx context.Context, userIDs .
 		}
 		m[localFriend.FriendUserID] = userInfo
 	}
+
 	usersInfo, err := c.user.GetUsersInfoWithCache(ctx, notInFriend)
 	if err != nil {
 		return nil, err
 	}
+
 	for _, userInfo := range usersInfo {
 		m[userInfo.UserID] = userInfo
 	}
diff --git a/internal/user/api.go b/internal/user/api.go
index 6fef37300..77877b344 100644
--- a/internal/user/api.go
+++ b/internal/user/api.go
@@ -16,9 +16,9 @@ import (
 	"github.com/openimsdk/tools/utils/datautil"
 )
 
-// GetSingleUserFromSvr retrieves user information from the server.
-func (u *User) GetSingleUserFromSvr(ctx context.Context, userID string) (*model_struct.LocalUser, error) {
-	users, err := u.GetUsersInfoFromSvr(ctx, []string{userID})
+// GetSingleUserFromServer retrieves user information from the server.
+func (u *User) GetSingleUserFromServer(ctx context.Context, userID string) (*model_struct.LocalUser, error) {
+	users, err := u.GetUsersInfoFromServer(ctx, []string{userID})
 	if err != nil {
 		return nil, err
 	}
@@ -125,10 +125,18 @@ func (u *User) ProcessUserCommandUpdate(ctx context.Context, userCommand *userPb
 
 // GetUserInfoFromServer retrieves user information from the server.
 func (u *User) GetUserInfoFromServer(ctx context.Context, userIDs []string) ([]*model_struct.LocalUser, error) {
+	var err error
+
 	serverUsersInfo, err := u.getUsersInfo(ctx, userIDs)
 	if err != nil {
 		return nil, err
 	}
+
+	if len(serverUsersInfo) == 0 {
+		log.ZError(ctx, "serverUsersInfo is empty", err, "userIDs", userIDs)
+		return nil, err
+	}
+
 	return datautil.Batch(ServerUserToLocalUser, serverUsersInfo), nil
 }
 
@@ -171,11 +179,11 @@ func (u *User) GetUsersInfo(ctx context.Context, userIDs []string) ([]*sdk_struc
 	return res, nil
 }
 
-// GetUsersInfoFromSvr retrieves user information from the server.
-func (u *User) GetUsersInfoFromSvr(ctx context.Context, userIDs []string) ([]*model_struct.LocalUser, error) {
+// GetUsersInfoFromServer retrieves user information from the server.
+func (u *User) GetUsersInfoFromServer(ctx context.Context, userIDs []string) ([]*model_struct.LocalUser, error) {
 	users, err := u.getUsersInfo(ctx, userIDs)
 	if err != nil {
-		return nil, sdkerrs.WrapMsg(err, "GetUsersInfoFromSvr failed")
+		return nil, sdkerrs.WrapMsg(err, "GetUsersInfoFromServer failed")
 	}
 	return datautil.Batch(ServerUserToLocalUser, users), nil
 }
diff --git a/internal/user/full_sync.go b/internal/user/full_sync.go
index a3646b9f2..e4fbe5d37 100644
--- a/internal/user/full_sync.go
+++ b/internal/user/full_sync.go
@@ -3,6 +3,7 @@ package user
 import (
 	"context"
 	"errors"
+
 	"github.com/openimsdk/openim-sdk-core/v3/pkg/db/model_struct"
 	userPb "github.com/openimsdk/protocol/user"
 	"github.com/openimsdk/tools/errs"
@@ -11,7 +12,7 @@ import (
 )
 
 func (u *User) SyncLoginUserInfo(ctx context.Context) error {
-	remoteUser, err := u.GetSingleUserFromSvr(ctx, u.loginUserID)
+	remoteUser, err := u.GetSingleUserFromServer(ctx, u.loginUserID)
 	if err != nil {
 		return err
 	}
@@ -28,7 +29,7 @@ func (u *User) SyncLoginUserInfo(ctx context.Context) error {
 }
 
 func (u *User) SyncLoginUserInfoWithoutNotice(ctx context.Context) error {
-	remoteUser, err := u.GetSingleUserFromSvr(ctx, u.loginUserID)
+	remoteUser, err := u.GetSingleUserFromServer(ctx, u.loginUserID)
 	if err != nil {
 		return err
 	}