Electromagnetic wave therapy instrument is often referred to as baked electricity treatment, this instrument mainly uses the role of electromagnetic and thermal therapy, while producing therapeutic effects on local soft tissues. Its main effect is to improve local blood circulation, especially the blood circulation of superficial soft tissues. There is also a good anti-inflammatory and swelling effect, mainly for chronic inflammation, local slight swelling can be used electromagnetic wave therapy instrument, local physical therapy. The acute injury swelling or acute inflammation, there is obvious swelling generally can not be applied, easy to increase the local exudation. Rheumatic, rheumatoid arthritis and osteoarthritis patients can use electromagnetic wave therapy instrument for low to medium intensity treatment, can also improve the inflammation of the joints, thus relieving the pain symptoms of the joints.