Swelling of the ankle fracture mostly refers to mild fracture of the ankle with swelling, whether or not you can apply hot compresses, when you can apply hot compresses, can not be generalized, need to combine with the patient’s specific situation to judge, for patients with no obvious contraindications, you can start applying hot compresses after 72 hours of injury. Early fracture, generally within 72 hours, it is recommended that cold compresses are mainly used to promote vasoconstriction at the site of injury, reduce bleeding and swelling. Fracture time more than 72 hours later, it is recommended that the main hot compresses, hot compresses can promote the local blood circulation of the injury site, accelerate the absorption of inflammatory factors, conducive to wound recovery. Whether or not hot compresses can be applied to a fractured ankle needs to be judged according to the patient’s specific situation, for serious open injuries or patients with serious underlying diseases such as diabetes, it is not recommended to apply hot compresses in order to avoid causing secondary damage. After the occurrence of ankle fracture, it is recommended to consult a doctor in time, under the guidance of the doctor for treatment.