In order to insure the safe operation and personnel healthy nuclear power plant is facilities, it is necessary to research the products of nuclear power plant control area access monitoring system in China.This paper introduces KZC functions, system components, market demand, research and development (R&D) status in China and applications in Chinese NPP, and then the paper present 4 ways to research radiation monitoring equipment to fit the Chinese needs by ourselves independently. The study may provide a preference for domestic KZC development