After the formation of lactic acid buildup, the time to disappear is related to the individual’s constitution and cannot be generalized. Lactic acid buildup is usually caused by excessive exercise and anaerobic muscle enzymes during exercise, resulting in incomplete glucose breakdown. Lactic acid buildup can lead to muscle pain, which usually lasts for 2-3 days. In some people, the pain will be delayed to 5-6 days or even about 1 week due to the large amount of lactic acid buildup or the limited transit capacity of the body. A large amount of lactic acid buildup can cause muscle soreness and fatigue. Patients should warm up before exercise, massage and stretching can be taken, and warm water shower and massage after exercise can regulate blood circulation and accelerate lactic acid metabolism. If the lactic acid accumulation is more serious, it is necessary to rest for a period of time before carrying out reasonable exercise. In daily life, you should keep a happy mood to avoid aggravation of pain due to poor mood. When the symptoms are serious, it is recommended to go to the sports medicine department of the hospital for further treatment in time.