A massage machine includes an electroencephalograph (brain wave measuring device), arranged to measure brain waves of a person being treated, an emotion estimating portion, which, when a massage is being executed, estimates, based on the brain waves measured by the electroencephalograph, an emotion of the person being treated, a question message outputting portion, arranged to vocally output a question message for asking the person being treated whether or not to perform, on the massage currently being executed, a setting change that is in accordance with the emotion of the person being treated estimated by the emotion estimating portion, and a setting changing portion, performing the setting change if a reply of the person being treated to the question message is one that accepts the setting change.