The reason why the foot is still swollen 3 months after the fracture is mostly due to the poor venous return after the fracture. After the fracture, the vein is traumatized because it takes time to re-establish the venous return, and the swelling may be reduced when the patient elevates the affected limb while resting in bed, but the swelling may appear again when moving down to the ground. For the treatment of this situation, it is generally recommended that the patient should be scalded more often, and if the swelling is very strong, go to bed and elevate the affected limb, and then go to the ground after the swelling has subsided, so that through repeated training and scalding, the swelling will slowly recover and get better as time passes and the venous return is re-established.