diff --git a/src/common/multi_terminal_login/multi_terminal_login.go b/src/common/multi_terminal_login/multi_terminal_login.go
new file mode 100644
index 000000000..02245cf7e
--- /dev/null
+++ b/src/common/multi_terminal_login/multi_terminal_login.go
@@ -0,0 +1,72 @@
+package multi_terminal_login
+
+import (
+	"Open_IM/src/common/config"
+	"Open_IM/src/common/constant"
+	"Open_IM/src/common/db"
+	pbChat "Open_IM/src/proto/chat"
+	"Open_IM/src/push/logic"
+	"Open_IM/src/utils"
+)
+
+func MultiTerminalLoginChecker(uid, token string, platformID int32) error {
+	//	1.check userid and platform class   0 not exists and  1 exists
+	existsInterface, err := db.DB.ExistsUserIDAndPlatform(uid, utils.PlatformNameToClass(utils.PlatformIDToName(platformID)))
+	if err != nil {
+		return err
+	}
+	exists := existsInterface.(int64)
+	//get config multi login policy
+	if config.Config.MultiLoginPolicy.OnlyOneTerminalAccess {
+		//OnlyOneTerminalAccess policy need to check all terminal
+		if utils.PlatformNameToClass(utils.PlatformIDToName(platformID)) == "PC" {
+			existsInterface, err = db.DB.ExistsUserIDAndPlatform(uid, "Mobile")
+			if err != nil {
+				return err
+			}
+		} else {
+			existsInterface, err = db.DB.ExistsUserIDAndPlatform(uid, "PC")
+			if err != nil {
+				return err
+			}
+		}
+		exists = existsInterface.(int64)
+		if exists == 1 {
+			err := db.DB.SetUserIDAndPlatform(uid, utils.PlatformNameToClass(utils.PlatformIDToName(platformID)), token, config.Config.TokenPolicy.AccessExpire)
+			if err != nil {
+				return err
+			}
+			PushMessageToTheTerminal(uid, platformID)
+			return nil
+		}
+	} else if config.Config.MultiLoginPolicy.MobileAndPCTerminalAccessButOtherTerminalKickEachOther {
+		//	common terminal need to kick eich other
+		if exists == 1 {
+			err := db.DB.SetUserIDAndPlatform(uid, utils.PlatformNameToClass(utils.PlatformIDToName(platformID)), token, config.Config.TokenPolicy.AccessExpire)
+			if err != nil {
+				return err
+			}
+			PushMessageToTheTerminal(uid, platformID)
+			return nil
+		}
+	}
+	err = db.DB.SetUserIDAndPlatform(uid, utils.PlatformNameToClass(utils.PlatformIDToName(platformID)), token, config.Config.TokenPolicy.AccessExpire)
+	if err != nil {
+		return err
+	}
+	PushMessageToTheTerminal(uid, platformID)
+	return nil
+}
+
+func PushMessageToTheTerminal(uid string, platform int32) {
+
+	logic.SendMsgByWS(&pbChat.WSToMsgSvrChatMsg{
+		SendID:      uid,
+		RecvID:      uid,
+		Content:     "Your account is already logged on other terminal,please confirm",
+		SendTime:    utils.GetCurrentTimestampBySecond(),
+		MsgFrom:     constant.SysMsgType,
+		ContentType: constant.KickOnlineTip,
+		PlatformID:  platform,
+	})
+}