Provided is a massage machine in which it is possible to promptly particularize a cause of abnormality or a component required to be repaired (replaced/adjusted) in a case where abnormality occurs, and a diagnostic system of the massage machine. There are provided a massage machine main body that has a treatment portion performing treatment with respect to a user, a running state detecting portion that detects a running state of each of a plurality of predetermined components configuring the massage machine main body, a storage portion that stores the running state, and a control unit that controls an operation of the massage machine main body. The control unit includes an abnormality determining portion which determines the presence and absence of abnormality related to the massage machine main body, and an abnormality outputting portion which outputs information related to the abnormality and information related to the running state in a case where the abnormality determining portion determines that abnormality is present.