Abstract: The function and performance testing of traditional dispatching control system mainly relies on the actual power grid environment and manual testing methods. It is difficult to discover the hidden problems of the dispatching control system. On the other hand, there is no systematic testing method for the feasibility of new technologies application in dispatching control system. This paper constructs a testing platform for dispatching control system. Testing environment is developed for dispatching control system at all levels, which integrates the primary and secondary system simulation. And testing scenarios for the platform, various applications, and complex functions are automatically generated. The overall testing and evaluation for dispatching control system are obtained by testing platform, which improves the comprehensiveness and completeness of testing and effectively reduces its hidden problems.