After knee replacement surgery, you can usually practice walking with the aid of a walker in 1~2 days, and the joint function will be basically back to normal in 2~3 months, except for a few cases of poor recovery when it may be difficult to walk in 3 months. After knee replacement surgery, when the drainage tube is removed, you can stand up and other activities on the ground under the guidance of the doctor, but be careful not to bear full weight. Walking can be practiced with the help of a walker or crutches on the advice of a rehabilitation specialist one to two days after surgery. In addition to going down to the ground, after knee replacement patients should also actively carry out muscle strength training and joint mobility training, such as squatting training, bicycle training, etc., usually in about 2 months can walk normally. However, it should be noted that if the patient does not pay attention to the postoperative care, early weight bearing or long time without exercise, it may lead to 3 months still can not walk. Therefore, it is important to conduct rehabilitation training under the guidance of a doctor after knee replacement surgery in order to maximize the recovery of joint function.