After thyroid surgery, the swelling will go down in about 2~4 weeks, which is mainly affected by the surgery condition, recovery condition and physical condition. After thyroid surgery, most of the wounds will heal in about 1 week, and the swelling will start to go down after the wound heals, and most of the people can have the swelling gone down in about 2 weeks; if the scope of the surgery is large, or if there is slight inflammation after the surgery, or if there is any deviation in the physical condition, the recovery time will be prolonged, and the time for the swelling to go down will be delayed to about 4 weeks. During the recovery period of thyroid surgery, avoid excessive contact with water in the early stage of the wound, avoid too strenuous exercise, do not eat too stimulating food, pay attention to quit smoking and alcohol, and once you find that the wound is red, swollen, and infected, you need to consult a doctor in a timely manner, and standardize the treatment under the guidance of the clinician. If you are not feeling well, you should consult a doctor in time.