In order to meet the multi-directional and multi-level testing requirements for the WAMS advanced application system, and to meet requirements of the test system on flexibility, reusability and scalability, a universal test platform is designed and constructed. In this paper, the basic function, composition, software structure, data model, application test cases of the universal test platform are described in detail. The division to the function of the test platform according to structured, hierarchical, modular standard is completed. To provide communication interface with external program and a complete test case according to different input data source cases, the test platform scalability and versatility is realized. The realization of WAMS advanced application system test using the universal test platform significantly reduces the workload of testing, it can also reduce the development cost of WAMS advanced application system and speed up the development progress.