1.From the 5th day after surgery, instruct the patient to actively exercise the wrist joint, the interphalangeal joint and the metacarpophalangeal joint of the healthy finger for 3 hours a day. 2.On the 14th postoperative day, the patient should practice lifting or holding the sandbag with the cooperation of the healthy finger, and the weight of the sandbag should be 50~100g. 3. On the 45th postoperative day, remove the kyphoscopic needle and perform active and passive exercises of the interphalangeal and metacarpophalangeal joints of the affected finger under the guidance of the rehabilitation therapist 48 hours later, with the speed of passive exercises being slow, gradually increasing the force and holding it for 10-20 minutes when the limit angle is reached, then slowly reducing the external force and so on repeatedly extending and flexing. The amplitude of the passive movement is from small to large, increasing daily or weekly. The active exercises of the affected finger include activities of the metacarpophalangeal and interphalangeal joints in all directions, as well as palm-to-finger, finger-to-finger, fist grasping and fist releasing. Auxiliary training of finger strength using tools such as rubber band mesh plates, screws and nuts for 6 hours per day. On the 90th postoperative day, focus on training the flexibility, coordination and precision of the affected finger movements, such as patting, throwing, catching, ring throwing, using spoons, chopsticks, writing and combing hair, etc. Also, train the ability of both hands to operate together, such as tying and untying knots, typing and playing the piano, etc. for 4 hours a day.