Muscle induration is a clinical manifestation of polymyositis. Polymyositis is a group of diffuse muscle inflammatory diseases with unclear etiology and main clinical manifestations characterized by symmetrical proximal limb, cervical muscle, and pharyngeal muscle weakness, muscle induration, and increased serum enzymes. Then, in addition to polymyositis which can cause symptoms of muscle pressure pain, dry syndrome, rheumatoid arthritis, scleroderma, osteitis pubis, fibromyalgia and other diseases can cause symptoms of muscle pressure pain. There are also various causes of diseases that trigger muscle pain. For example, genetic factors, family history, viral infections, bacterial factors, vascular abnormalities, immune abnormalities, and other causes can be caused. In Chinese medicine, it is believed that the deficiency of endowment or carelessness in regulating the appetite leads to the loss of qi, blood, liver and kidney, the liver is the main tendon, the kidney is the main bone, the liver and kidney are deficient, there is no way to fill the nourishment, to the point of deficiency, that is, the place to accommodate the evil, wind, cold and damp evil take advantage of the deficiency and enter, internal and external combination of evil, that is, the disease. From the perspective of Chinese medicine, the disease is caused by wind, cold and dampness on the basis of the internal causes of liver and kidney deficiency.