Mild degeneration of the posterior horn of the meniscus is usually not serious. It is usually associated with overweight, excessive wear and tear on the joints, and overactivity, and has not reached the level of meniscus damage, so it is not serious. With age, and joint strain, cold, etc., ligament joint bursa, meniscus degeneration and osteophytes will occur. The main symptoms of mild degeneration of the posterior horn of the meniscus are joint pain when bending the knee joint, mild limitation of activities, and in severe cases, pain when walking up and down the stairs. Mild degeneration of the posterior horn of the meniscus is usually not serious, but it should be given high priority. It is important to control weight in a timely manner and to exercise the strength and power of the muscles around the knee to improve the stability of the knee. Treatment, when necessary, improves symptoms, slows down degenerative changes, avoids aggravation of degenerative changes in the meniscus leading to meniscus injury, and helps to protect the function of the knee joint.