This is actually the result of a normal postoperative edema reaction to the incision. Because of the extensive separation of the skin flap above and below the incision during thyroid nodule surgery, this can easily cause edema of the tissues surrounding the incision. Especially in middle-aged and older women, the incision is easily edematous because the skin is lax and there is more fatty tissue. Patients should not be alarmed by this situation, as the edema is absorbed and the incision will gradually return to flatness within 2 months after surgery. Generally, the thyroid surgery incision is thin like a line within 1 month, then it will gradually thicken from 1 month after surgery, and it will have a protrusion from 3 months after surgery, reaching a peak at 6 months after surgery, then the incision will gradually flatten and become lighter in color, and by 1 year after surgery, most of the incisions will become lighter and less obvious. The healing of the thyroid surgery incision is related to the good or bad alignment of the incision sutures and the individual’s physical condition, and is not related to the placement of drainage tubes.