There are several causes of postoperative thyroid edema, including normal postoperative edema, local infection, and postoperative bleeding. The treatment of postoperative edema needs to clarify its cause and then carry out targeted treatment, such as hot compresses, the use of antibiotics, drainage and other therapeutic means. 1. Normal postoperative edema; usually caused by poor blood circulation near the incision after surgery. If this is the case, there is no need to worry too much, postoperative edema will gradually subside with the establishment of new vascular circulation, and the time period is usually 3 to 6 months. Appropriate measures such as hot compresses and infrared irradiation can speed up the blood circulation and promote the edema to subside. 2. Local infection: usually caused by improper postoperative care, the wound may have pus, bleeding and so on. In this case, the wound should be fully drained with the help of doctor and given intravenous ceftriaxone sodium, levofloxacin or antibiotics such as cefaclor and amoxicillin. 3. Postoperative bleeding; usually occurs within 8 hours after surgery, neck swelling, may be accompanied by breathing difficulties. At this time, a doctor should promptly deal with the treatment, to be injected with snake venom hemagglutinin and other hemostatic drugs, if necessary, need to carry out drainage or wound reopening treatment. Post-thyroid surgery edema, it is recommended to go to the hospital in a timely manner to clarify the cause of the disease, with the help of the doctor for targeted treatment.