Most of the ankle fracture stiffness can be recovered. If the stiffness of ankle fracture is within 3 months, most of the stiffness is caused by prolonged braking of the ankle after fracture. If the fracture is healed, most of the flexion, extension and rotation angles can be recovered through the rehabilitation exercise in the later period, such as rolling a soccer ball on the foot or exercising the mobility of joints with the help of elastic bands, together with the manipulation of loosening, most of the flexion, extension and rotation angles can be recovered. If the stiffness of ankle fracture treated with surgery exceeds 3 months, it is considered to be caused by localized adhesion of the joint, the recovery time is relatively long, and some of them are very difficult to recover, and may leave behind impaired joint mobility, which needs to be treated with surgery for joint release. Therefore, the stiffness of ankle fracture depends on the specific situation and time of the fracture, and most of them can be recovered through treatment.