To provide a compact and inexpensive gait assessment system, including a basograph, which can be readily handled by, for example, trainers, and can eliminate the necessity to select any specialized measurement space to detect foot movement during walking. A basograph (10) is equipped with a measuring instrument (12), including, for example, an acceleration sensor (13), for measuring data related to gait of a subject, and a PC (20) receives the data via a USB interface or suchlike, so that an estimating section (22) estimates the gait status of the subject based on the received data. The estimating section (22) includes at least one of the following elements for performing estimation based on predetermined-direction acceleration ACC of the subjects foot (40) at each sampling time: a push-off estimating part (23) for estimating the intensity of the subjects push-off a tempo estimating part (24) for estimating gait tempo an elevation estimating part (25) for estimating foot elevation and a stride estimating part (26). An assessing section (30) assesses the gait status of the subject based on the estimation of the estimating section (22), and a presentation section (31) presents the assessment result by the assessing section (30) in a predetermined form.
