In everyday life, people often suffer from ankle sprains (commonly known as “broken feet”) for various reasons. The incidence of this injury is very high among all kinds of people due to various reasons, such as sports injuries in young and strong people, the love of beauty (high heels) of lesbians, the tender development of children, and the functional degeneration of the elderly, and it can be said that almost no one can proudly say: I have never broken my foot in my life! The main reason for a broken foot is the structural characteristics of the ankle joint, which is not very stable and is particularly prone to injury in a taut foot posture, usually triggered by the inversion of the foot, which is likely to injure the ligamentous structures on the outside of the ankle. During a serious sprain, the lateral ligaments of the ankle joint are often ruptured or strained, and with excessive rest and braking after the injury, the soft tissues of the lateral ankle joint cannot return to their original strength in time, which leads to joint laxity and instability, resulting in the common “habitual broken foot” in daily life. Joint instability not only causes repeated injuries and inevitable pain and inconvenience, but also causes damage to the cartilage and even bone around the joint, degeneration, hyperplasia, and other hidden dangers due to repeated injuries, which sow the seeds of danger for future life. So how can it be addressed? We know that joint stability is the responsibility of both ligaments and muscles, and the organic unity of the two functions can fully protect the joint. For the ankle joint, a comprehensive exercise of its surrounding anterior, posterior and lateral muscle groups is necessary to effectively enhance joint stability. Method 1: Resistance hook foot: use the leather band as resistance, fixed at the distal end, set on the foot, hook as hard as possible from the straight position to the flexion position, pause, slowly release, do 20 times repeatedly, rest 30 seconds, do 4-6 groups, 1-2 times a day. Method 2: resistance taut foot: leather band for resistance, proximal fixed (hand grip), set on the foot, from the flexion position as hard as possible taut to the extension position, a short pause, slowly release, repeatedly do 20 times, rest 30 seconds, a total of 4-6 groups, 1-2 times a day. Method 3: Anti-impedance foot valgus: sitting on the bed, knee flexion, legs, knee joints, heels together, foot surface slightly taut, with leather straps over the two feet, the affected foot turned out with force, the action standard, the number of the same as above. Method 4: resistance foot inversion: other postures with resistance foot inversion, leather straps fixed at the distal end, force inversion, the number and requirements are not different. Method 5: balance exercises: stand on a special balance board, balance soft pedal (online and sporting goods stores can buy) or homemade simple balance pad, leg straight, chest up, head up, the center of gravity as far as possible, with the strength of one leg to control the body balance, 3-5 minutes each time, rest 30 seconds, a total of 2-3 times each group, 1-2 groups per day. If the strength is not yet safe, you can seek the protection of others or handrails at your side. If the strength is good to complete without difficulty, you can hold a heavy object to complete the action or do 0-45° half squats on the mat to increase the difficulty. Note: homemade balance cushion can find several similar size empty mineral water bottles, screw the cap, 5-6 tied into a row, placed on the ground that becomes a simple balance cushion. Method 6: heel: the affected side of the foot on the step, the heel and arch in the step outside, from the full hook foot position to lift the heel until the full taut foot position, the action standard, the number of the same method 1, 2, required to try to complete the action within the maximum stroke, if the strength is limited, can be completed with the assistance of the upper limbs. Strength training should be persistent, although very boring, even very painful, but for the sake of their health, or should try to adhere to, practice to walk stable, brisk, in order to stop. Of course, once the unfortunate injury occurs, the acute trauma period should still follow the principles of acute treatment, with proper protection, braking and icing. Only the organic combination of reasonable and scientific rest and proper rehabilitation training can maximize the treatment of injury and effectively prevent the recurrence of injury.