Muscle soreness is very common in clinical practice and is caused by the following reasons: 1. high intensity physical exercise and mountain climbing, resulting in overexertion of the leg muscles, local metabolism, lactic acid accumulation, failure to timely discharge and induce muscle soreness. 2. local soft tissue damage and local stimulation by wind and cold, triggering the occurrence of muscle soreness and pain. 3. may also be The disease compression, induced by the corresponding parts of the soreness, swelling, discomfort symptoms occur. If the muscle soreness is transient and does not last for a long time, it may be caused by overexertion and does not require treatment.