It is true that it is easy to sprain again after breaking your foot once. A broken foot or ankle sprain can easily cause soft tissue, ligament and tendon damage around the ankle joint, resulting in local redness, swelling and pain in the ankle joint. At this time, rest and treatment should be the main focus. If you do not have more rest, but insist on walking, it can lead to poor healing of soft tissue injuries, ligament injuries healing in the joint relaxation, all of which can lead to loose and unstable ankle joints, then it is easy to sprain again. If the pain or swelling is obvious and the joint activity is limited, timely X-ray and magnetic resonance examination is needed to clarify whether there are fractures and ligament injuries, and to clarify the extent and location of the injury. At the same time, ankle sprains can lead to cartilage damage in severe cases, and even cartilage exfoliation and subchondral bone exposure. Without active treatment, the inter-articular bone rubs against each other to produce pain, and it is easy to sprain again. Therefore, active treatment should be carried out after a broken foot, including braking the ankle immediately after the injury, actively applying cold compresses to reduce swelling and pain within 24 hours, clarifying the site and degree of injury by X-ray or MRI as far as possible, and using plaster and other protection for the joint under the guidance of a doctor to avoid re-activation, and surgical treatment to repair the ligaments if necessary. After the above operations, the local soft tissues and ligaments can be healed in the correct position to maintain the stability of the ankle joint and make it less likely to be sprained again.