The scars of thyroid surgery are harder than the scars of surgery elsewhere. As long as there is no redness, swelling and pain of the skin and other infections, no treatment is needed and the swelling will slowly go down after a period of time. The wound should be disinfected and changed regularly, pay attention to the diet not to eat stimulating food, and quit smoking and alcohol. If infection occurs, you can choose to apply local heat to help the edema dissipate, and you can also take blood-stasis-boosting and oral anti-inflammatory drugs. In case of hypothyroidism, which can also lead to edema, a thyroid function test is needed, and physical therapy, such as baking electricity, can also be chosen for incisional edema. If the edema is severe, or even if the patient experiences physical discomfort, such as difficulty swallowing and breathing, he or she should immediately go to the hospital for examination and treatment.