Abstract: Reactor protection system of Hongyanhe project is based on Mitsubishi MELTAC safety digital platform. This paper introduces the scope and principle for periodic tests of reactor protection system, and then it describes the design schemes of instrumentation channel test, protection logic test and actuator control channel tests in detail, finally it analyzes the characteristics of the tests. The result shows that the periodic test solutions of reactor protection system for Hongyanhe project adequately utilize the advantages of automatic tester, and the test scope is extended and the test availability, flexibility and facility are enhanced.