The invention provides an ultra-high-speed photoelectric camera system test platform for shooting high-frequency collisions of a mechanical transmission system and relates to the field of high-speed photography. The ultra-high-speed photoelectric camera system test platform comprises a triggering module connected with a high-speed camera. When the mechanical transmission system performs the high-frequency collisions, the triggering module sends a triggering signal to the high-speed camera according to the strain force changes of collision objects of the mechanical transmission system or the displacement changes between the collision objects or the currents between the collision objects to control the high-speed camera to shoot the high-frequency collisions.