SQl server 2012 管理程序 连 SQl server 2016 实例，可以成功，这样可以吗？

billpeace, If you mean to manage a newer SQL Server version with a older SSMS (Management Studio), yes, that's possible, but newly introduced features will be missing.

It's always the best option to use the latest SSMS version, you can download it here:

https://docs.microsoft.com/en-us/sql/ssms/download-sql-server-management-studio-ssms?view=sql-server-ver15