When you break your ankle going down the stairs, you can treat it by the following methods: First, mild ankle sprain requires braking, ice, elastic bandage fixation, and elevation of the affected limb, and you can return to normal life and work in one to two weeks, but you need to wait for about six weeks before you can continue to exercise, otherwise it will produce pain and swelling symptoms aggravated. Secondly, for severe ankle sprain, X-ray and MRI of the ankle joint should be taken to determine whether there are fractures, dislocations and tears of ligaments. If there is fracture, dislocation and ligament tear, it needs to be repositioned cast external fixation or surgical treatment to restore the continuity of the fracture end and the integrity of the ligament in order to ensure the stability of the ankle joint. After treatment, it needs to be combined with rehabilitation training to restore the strength and intensity of the muscles around the ankle joint, such as the calf triceps.