There is no absolute most effective exercise for knee pain. Generally, exercises can be performed to reduce joint weight bearing as well as to improve strength around the knee. Patients can perform some bed training, such as aerial stirrups, seated lifting and flexing the knee joint, etc., in order to improve the mobility of the knee joint, so that its mobility to reach normal. Resistance training can also be carried out on this basis, placing sandbags at the knee joint, using rubber bands to increase resistance, etc., to exercise the strength of the quadriceps and hamstrings, so as to make the knee joint more stable. Swimming is also a better way for knee patients to exercise. When swimming, the knee joint does not bear weight, which also belongs to the non-weight-bearing joint function training, and while exercising the function of knee muscles, it also relieves knee pain. It is recommended that patients carry out functional exercises under the guidance of a doctor, so as to avoid injuries caused by incorrect self-exercise.