Objective: It takes Shenzhen, Beijing, Qingdao, Shanghai, Wuhan and Chongqing as examples, which are well developed, to introduce the practices of gatekeeping system, and to provide more quantitative evidence-based policy suggestions for the cities who will implement gatekeeping. Methods: It mainly focused on searching the literature data of gatekeeping．The content were selected and summarized．Results: It summarized that accessibility, satisfaction and utilization of gatekeeping have improved. However, there are still some difficulties in practices this system. Conclusion: Well functioning gate-keeping system are of critical importance to the achievement of the rational flow of health resources among the three-tier health care delivery system in China. Gatekeeping should be focused on in both implementation and research in the near future.