A boxing motion analysis system includes an IMU, a communicating device, and a computer device and implements a boxing motion analysis method. The boxing motion analysis method includes: the IMU disposed on a wrist position of the user to detect the user’s fist movement and generate multiple acceleration values; performing signal clipping on the acceleration values to obtain the acceleration valuescorresponding to each punch movement and then dynamically correcting the acceleration values by the computer device; and performing quaternion calculation on the acceleration values of each fist movement to obtain a plurality of post-rotation acceleration values, and then performing primary integration and secondary integration on the post-rotation acceleration values to obtain multiple speed values, multiple positions, and a trajectory map corresponding to each punching action by the computer device. |