Thyristor valve is one of the most important devices within high voltage direct current(HVDC) transmission system, therefore as the foundation and precondition for the research and development as well as engineering application of the valves, complete type test should be carried out to ensure the safe, reliable and stable operation. The items and parameters of the valve operational test for Ningdong-Shandong ±660 kV HVDC transmission project are introduced in detail. Furthermore, the synthetic test method employed and test waveforms are illustrated. It is shown from the test results that the valve design for the project is appropriate and can meet the specified test requirements.