Taking a certain type of aviation high-speed axial piston pump as the research object,the influences of the rotational speed on swash plate moment and swash plate resultant force locus were analyzed considering the reciprocate inertia effect of slipper plunger assembly.The results show that with the increase of the rotational speed,the alternating moment of the swashplate around the variable coordinate axis moves to the direction of increasing the inclination angle of the swashplate,it gradually no longer cross the zero point,and the peak of the torque increases exponentially; the rotational speed has little influence on the moments of the swash plate around the other two axes; the action point locus of swashplate resultant force moves to the bottom dead center area with the increase of rotating speed.The increase of rotational speed helps the swashplate to move towards the direction of increasing displacement and to reduce the vibration of swashplate caused by torque alternating zero crossing.