There is no such thing as the best exercise method for osteoarthritis, it depends on the severity of the patient’s lesion, if it is the acute stage of osteoarthritis, it is not recommended to exercise, on the contrary, it is necessary to reduce the activity; if the condition is mild, it can be carried out with straight leg elevation exercise or swimming exercise; if the condition is more serious, it is necessary to carry out surgical treatment. Osteoarthritis is a chronic joint disease characterized by degenerative changes in articular cartilage and secondary osteophytes. The lesions involve the articular cartilage or the whole joint. The main manifestations are joint pain, stiffness, hypertrophy and limited joint movement. In the acute stage of osteoarthritis, it is recommended to reduce joint weight bearing, avoid excessive and drastic activities, and use crutches or canes to assist in activities. When the disease is mild, early reduction of joint activities, at the same time with straight leg raising exercise, that is, lying on the back, legs straight and close together at the same time the feet back extension, straighten the knee joints upward lifting from the bed about 30 centimeters, adhere to the 15 ~ 30 seconds to put down. This exercise can be repeated. Swimming exercises can also help strengthen the leg muscles and protect the joints. If the condition is more serious, surgery may be needed, so it is recommended to seek medical attention when symptoms such as joint pain occur to avoid delays.