Muscle soreness, which may be caused by excessive accumulation of localized lactic acid metabolites or mild injury, should be stopped to avoid worsening of symptoms. Exercise time is too long, resulting in excessive accumulation of lactic acid metabolites, will cause muscle soreness, continue to exercise, may lead to the symptoms of soreness aggravation, but also prone to cause muscle strain, so can not continue to exercise. When performing exercise, the muscle localized mild strains, can also lead to muscle soreness, the pain is more obvious when pressing, can not perform exercise, exercise may lead to injury aggravation. Muscle soreness lasts for a long time, and the symptoms are getting more and more serious, may be the existence of muscle damage, it is recommended to go to the orthopedic department of the hospital for appropriate examination and treatment, to avoid causing other complications.