A gait motion display system including: a triaxial accelerometer, attached to the subject, that measures acceleration data of a subject in walking； an imaging unit that takes images of the subject in walking to obtain moving image data showing gait motions of the subject； a recording unit that records the acceleration data and the moving image data in synchronization with each other； an identification unit that converts the acceleration data recorded by the recording unit into horizontal displacement data and vertical displacement data, and identifies, from the moving image data, a representative image corresponding to a representative motion in a gait cycle, based on the horizontal displacement data or the vertical displacement data； and a display that displays an image illustration of the representative motion in the gait cycle, with the representative image identified by the identification unit.
