Exercises for knee pain are categorized into non-weight-bearing training and resistance training. 1. Knee non-weight-bearing training, including non-weight-bearing knee flexion and extension activities, generally 2~3 times a day, 10~20 minutes each time. Quadriceps training, the lower limb is straight and immobile, patella intermittent contraction, or leg straightening, tense knee joint, conscious lifting away from the bed, suspended for 10~20 seconds, more than 10 times a day. There is also swimming training, at least half an hour a day, 3~5 days a week. 2. Resistance function training, including placing sandbags at the ankle joint, 3kg~5Kg, and doing straight leg raising training of the lower limb when resisting the weight of the sandbags. The use of exercise equipment, tied in the ankle joint behind the leather band, and then forcefully flex the knee for training, can enhance the strength of the quadriceps and hamstrings. Exercises for the knee joint are recommended under the guidance of a physician. If the knee pain is not effectively relieved after the exercise, it is recommended to go to the hospital in time.