The mechanism of muscle soreness is complex, mainly including the following aspects, such as lactic acid accumulation, muscle spasm, muscle fiber or connective tissue damage, etc. Changes in osmotic pressure between tissues or acute inflammation may also cause muscle soreness. The best way to relieve pain is to rest. Rest can relieve muscle soreness and slowly promote blood circulation, which can accelerate the discharge of metabolic products and eliminate nutrient supply and repair of sore muscle parts to restore them to normal. Another effective way is to apply heat, physiotherapy and acupuncture treatment to the sore local muscles, which can promote blood circulation, improve metabolism and accelerate the relief and recovery of muscle soreness, especially with light stretching exercises or massage, which can better eliminate delayed muscle soreness and bring it back to normal.