The embodiment of the invention provides an automatic testing system for the dynamic pressure feedback character of a servo valve. The testing system comprises a mechanical test bench system, an energy system and a measurement and control system, and the mechanical test bench system, the energy system and the measurement and control system are connected with one another. The mechanical test bench system is used for loading the servo valve, providing a specific hydraulic loop and providing an operation platform for input signals and output signals. Parts in the mechanical test bench system are connected through hydraulic oil pipelines. The energy system is composed of an oil tank, a pump set, a filtering system, a pressure adjusting system, a temperature control system, an electrical control and power distribution system and a motor starter. The energy system is used for supplying oil to the automatic testing system for the dynamic pressure feedback character of the servo valve. The measurement and control system is used for applying a control signal to the servo valve loaded by the mechanical test bench system, collecting testing parameters of the tested dynamic pressure feedback servo valve, and processing and displaying the relevant data through upper computer software. The automatic testing system is of great significance on improving the testing accuracy and testing efficiency of the relevant parameters of a dynamic pressure feedback for the servo valve.