To ensure safety, it is recommended to carry out rehabilitation training under the guidance of the rehabilitation physician and surgeon according to local conditions: ①Phase 1 (1-3 weeks): Absolutely no weight-bearing in the first week, protect the surgical site, remove external fixation, and actively perform plantarflexion/ dorsiflexion for 5 times; in the second week, plantarflexion/ dorsiflexion, internal and external rotation and circular motion for 20 times each; in the third week, gradually start to walk slowly with partial weight-bearing under the protection of a cast. In the third week, partial weight-bearing walking on the ground was gradually started under the protection of a cast, and 20 repetitions of gentle passive traction plantarflexion and internal/external rotation with a rubber band and non-weight-bearing activities in water were performed 3 times a day before continuing to increase active training. Phase 2 (4-6 weeks): gradual change from partial to full weight-bearing, with the knee in 35 or 40° of flexion and increasing intensity of passive ankle flexion; full extension of the knee from week 5; internal and external rotation, plantarflexion/dorsal extension with a rubber band 20 times, 3 times daily; walking exercises with full floating in the water. Gentle lateral massage of the Achilles tendon and ultrasound therapy (mobile method, frequency 800-1000 KHz, speed 3-6 cm per second) were combined. Phase 3 (6-12 weeks): Full weight-bearing was allowed and the limb was further stretched. The movement of the ankle joint in all directions was enhanced with a rubber band, hammer lifting was practiced within the weight-bearing range, and walking exercises were performed with complete floating in water; bicycle or walking machine training was performed. Adjunctive treatment as before. Phase 4 (after 12 weeks): Increase the weight-bearing of the foot to normal weight, start jogging, treadmill training and trampoline training; outdoor exercise, etc.