In the normal use of massage chairs, if the daily ration, rather than long-term application, usually no harm to the body. If not used correctly, and long-term, a large number of applications of massage chairs, the body can cause the following hazards: 1, severe osteoporosis of elderly patients, especially elderly women, repeatedly, a large number of massage, can increase the incidence of fractures; 2, a large number of long-term muscle massage, easy to cause muscle strains; 3, long-term passive massage, the muscle does not get active contraction brought about by the effective stimulation, usually can make the muscle fibers thinning, muscle Overall strength is weakened, and even the risk of muscle atrophy, etc.; 4, massage chair has a mild radiation effect, is not recommended for pregnant people. Massage material is relatively hard, can not relieve disease pain, may also cause some damage to the local muscles.