Swelling after playing with a broken foot can be solved by several methods: first, limited weight-bearing activities using crutches and intermittent local ice treatment for 30 minutes 6-8 times a day. Continuous elevation of the patient, away from the heart plane, can reduce swelling and relieve painful symptoms, and the use of compression bandages can prevent swelling from worsening; second, when the foot flexibility is significantly restored, external tension isometric contraction is started. After applying heat to the ankle joint, do passive stretching exercises in the direction of external rotation every day. Isometric contraction can strengthen and stabilize the ankle joint and also prevent re-injury; limit the amount of exercise, such as basketball, running and aerobic exercises that have an impact on the foot and ankle joint; third, if the ankle joint continues to swell, has intractable pain or becomes unstable, an MRI should be performed to determine if a ligament rupture has occurred. If ligament rupture occurs, surgical repair is needed to restore ankle joint stability.