A method of using artificial or natural physical factors to act on the human body to produce favorable reactions and achieve the purpose of preventing and treating diseases. The important content of rehabilitation treatment. Physical factors can cause human reactions through the direct local and indirect effects of nerves and body fluids, regulate blood circulation, improve nutritional metabolism, improve immune function, regulate nervous system function and promote tissue repair, thus eliminating pathogenic factors, improving pathological process and achieving the purpose of treating diseases. Commonly used artificial physical factors include electricity, light, sound, magnetism, temperature and mechanical force. Electrotherapy can be divided into direct current, low frequency, intermediate frequency, high frequency and static electricity. Phototherapy is divided into infrared, visible light, ultraviolet and laser therapy; Acoustic therapy is divided into ultrasonic therapy and ultra-low sound therapy; Therapeutics using temperature include hyperthermia, cold therapy and cryotherapy. Therapy using mechanical force includes massage, massage, manual therapy, traction and exercise. Exercise therapy is an important part of physical therapy, and it is a method to prevent and treat diseases by comprehensively utilizing patients' strength and external mechanical force. Commonly used natural physical factors include sunshine, atmosphere, seawater, mineral springs, mountains, forests and so on. People are in different natural environments and accept the comprehensive influence of different natural physical factors in the environment to prevent and treat diseases. Artificial physical factors can also be used for physical diagnosis. Physiotherapy departments often use low-frequency pulse electricity to measure the functional state of peripheral nerves, use pressure sensors to measure the change of human center of gravity to judge the balance function, use ultraviolet erythema reaction to judge whether human body is sensitive to sunlight, and use the electrical excitability of acupoints to judge the functional state of meridians. Physical therapy is widely used in clinic, such as acute and chronic inflammation, acute and chronic injury, limb motor dysfunction, pain syndrome, visceral organ dysfunction and so on. Hot compress is a physical therapy. Generally, hot towels, warm water bags and warm bags (wrapping with towels first can help absorb sweat and reduce the chance of burns) can be directly applied to the affected area, two or three times a day, each time 15 to 20 minutes. Hot compress therapy plays an important role in the treatment of soft tissue injury diseases. Hot compress therapy has the functions of dilating blood vessels, improving local blood circulation and promoting local metabolism, which is beneficial to the recovery of diseases. Hot compress itself can also relieve muscle spasm, promote the absorption of inflammation and blood stasis, and drug hot compress can also locally absorb drugs, thus achieving the purpose of direct treatment and making the treatment more direct and effective. Hot compress therapy is suitable for all kinds of closed injuries. The heat source can be hot towel, hot water bottle, therapeutic instrument with heating function and hot compress medicine such as Hantongle. Traditional Chinese medicine hot compress method combines the dual functions of medicine and hot compress, and has obvious curative effect. It is a commonly used hyperthermia method in clinic.