Plaster can be removed by plaster scissors or chainsaw, depending on whether it is plaster tube-type fixation or plaster upper and lower bracket fixation, as follows: First, plaster tube-type fixation: if it is plaster tube-type fixation, plaster scissors or chainsaw should be used to remove it, and care should be taken to protect the skin during the removal process to avoid skin damage. Second, plaster upper and lower bracket fixation: If the plaster upper and lower bracket fixation, the plaster fixation can be removed by cutting off the bandage on the surface of the plaster, and care should be taken to protect the skin during the process of removal to avoid injury. Once the cast is removed, the activities of the fixed part should be resumed as soon as possible, including active muscle contraction, diastole and joint flexion and extension activities, in order to prevent serious muscle atrophy and restore the range of motion of the joint and protect joint function, and the patient should insist on daily exercise in order to play the best rehabilitation training effect.