Rehabilitation training after ligament rupture surgery includes muscle strength and joint mobility training, taking the lower extremity as an example: first, ankle pump exercises, active flexion and extension ankle training daily, requiring flexion and extension to reach the maximum angle and maintain 3-5 seconds, so that the muscle continues to contract, complete 500-1000 times a day, can be grouped by themselves; second, quadriceps static contraction training, active contraction of the quadriceps muscle and Maintain muscle tension for 3-5 seconds, complete 500-1000 movements daily, also can be grouped by themselves; third, joint flexion and extension activities daily, complete 10-20 times, divided into morning and afternoon, to prevent joint stiffness, joint adhesions, and early recovery of joint mobility.