Patients who have broken their feet for one month and still have painful symptoms are commonly caused by too long fixation time and too far back in time of rehabilitation exercise, as follows: First, too long fixation time: generally patients with broken feet only need to fix for 1-2 weeks, too long fixation time will cause local blood circulation disorder, and patients can have stiff ankle joints with local painful symptoms. Secondly, the time of rehabilitation exercise is too far back: the time of rehabilitation exercise for broken foot patients is too far back. Patients with broken foot should wait for pain and swelling to be relieved and immediately carry out rehabilitation exercise to avoid delays, otherwise scarring will be formed around the joint, and even adhesions will be easily formed, causing painful symptoms. The early liberation of the ankle joint for patients with broken foot and the functional exercise can make the function of the ankle joint recovered as early as possible, otherwise it will affect the daily life and work, and also cannot participate in sports.