This paper analyzes the functions and main characteristics of the marine security base port (MSBP) based on a particular MSBP case, and expounds that the design shall perfect the security conditions of the back land as possible as we can, the operation days and in-port berthing days of MSBP shall be as much as possible, the typhoon anchorage shall be installed, which is distinguished with the normal port. It may serve as reference for the design of the same kind port.