After ankle sprain, the swelling can be reduced by the following methods: 1. Mild ankle sprain: If the ankle sprain is only mild, the affected limb can be wrapped with a short-term elastic bandage with pressure, and the affected limb can be elevated and treated with cold compresses at the same time. 2. Severe ankle sprain: If the ankle sprain is more severe, an ankle X-ray and an MRI of the ankle joint should be checked to confirm whether there is a fracture or ligament tear. Confirm whether there are fractures and ligament tears. If there is any of the above lesions, it is necessary to fix the fracture by repositioning or incision to restore the stability of the fracture end and the continuity of the ligament to ensure the stability of the ankle joint, remove local swelling and relieve pain. Patients should also rest and brake the foot to avoid stressing the affected foot in order to completely relieve the swelling. Patients should pay attention to protect the ankle joint to avoid ankle sprains, which can have serious adverse consequences.