Foot fracture 80 days already belongs to the late stage of fracture recovery, the fracture wound has basically healed, muscle and joint activities have gradually returned to normal, at this time we should gradually restore the normal function of the limb by exercising the joints and muscles. For the muscles and limbs with dysfunctional activities, targeted exercises should be performed as follows: 1. knee exercises, the patient sits on a chair, straightens both knees for 5-6 seconds after placing both feet on the ground. 2. quadriceps training to prevent muscle atrophy, the patient adopts a prone position, bends the knee on one leg near the hip and holds the posture for 5-10 seconds before putting it down. 3. ankle exercises, the patient lies flat on the bed and straightens both legs so that the back of the foot is directed upward. Straighten so that the dorsum of the foot is hooked upward and the heel is pressed downward, and repeat the action for training. It is extremely important to perform functional exercises later in the process of fracture wound healing, and attention should be paid to the correct manipulation.