Intercostal myositis refers to the inflammatory reaction of the intercostal muscle flesh caused by chronic strain, trauma and infection. Intercostal myositis is generally manifested as chest pain or dull pain, local skin redness, swelling, pressure pain, coughing, deep breathing or position change when the pain is aggravated, according to the cause of the disease can be divided into acute intercostal myositis and chronic intercostal myositis. 1. Acute intercostal myositis: generally caused by trauma or bacterial or tuberculosis infection, the treatment is mainly based on anti-infection or anti-tuberculosis treatment, when the pain is serious, analgesic treatment can be given, if there is intercostal abscess, generally need to be incised and drained. 2. Chronic intercostal myositis: more common in the clinic, for the intercostal muscle chronic strain caused by aseptic inflammation, the treatment is based on rest, severe pain can be given to non-steroidal anti-inflammatory analgesic drugs, avoid sedentary, strenuous or strenuous exercise, and more outdoor aerobic exercise. Intercostal myositis patients, it is recommended to go to the regular hospital for further consultation and treatment.