The rehabilitation training methods after cast removal include static muscle contraction and diastole, resistance joint flexion and extension activities and active joint flexion and extension activities, as follows: First, static muscle contraction and diastole: the patient insists on static muscle contraction and diastole at the fixed part of the cast, completing 500-1000 times daily, which can accelerate blood circulation and promote swelling and tissue repair. Secondly, resistance joint flexion and extension activities: after removal of the cast, it is usually proved that the local area has been relatively stable, and resistance joint flexion and extension activities can be carried out to assist the elastic band to complete the movement, which is helpful to restore the muscle strength and intensity as well as joint stability as soon as possible. It takes 10-20 times a day to complete the movement, increasing day by day. Third, active joint flexion and extension activities: gradually increase from several times to dozens of times per day, the main purpose is to prevent joint stiffness, restore the range of motion of the joint and the function of the joint. The above rehabilitation training is applicable to the rapid recovery after the removal of the cast.