A massage machine includes a backrest and a seat, and further includes a treatment unit configured to perform a treatment with respect to a subject； a measurement unit configured to measure beat rates of the subject or an amylase activity in saliva of the subject before and after a predetermined time； and an evaluation portion. The evaluation portion performs an evaluation of the treatment based on a first index indicating a parasympathetic nervous function activity of the subject and a second index indicating a sympathetic nervous function activity of the subject. The first index and the second index are obtained based on the beat rates or the amylase activity before and after the predetermined time.
