A maintenance system includes: a walking training apparatus including a walking assistance apparatus attached to a leg of a trainee, and to assist the trainee in walking, and first transmission means for transmitting information in which information about the number of times of walking or a time of walking performed in the walking assistance apparatus is associated with a component of the walking assistance apparatus; and a server including determination means for comparing the information about the number of times of the walking or the time of the walking transmitted from the first transmission means with a preset evaluation value for durability of the walking assistance apparatus, and determining a timing for performing maintenance for the walking assistance apparatus, and second transmission means for transmitting maintenance information including the timing of the maintenance determined by the determination means and information about the associated component of the walking assistance apparatus.