Benign thyroid nodule removal surgery may cause enlarged lymph nodes. When a benign thyroid nodule enlarges and puts pressure on the surrounding tissues, the patient may experience pain around the nodule, a foreign body sensation in the throat, shortness of breath, and difficulty swallowing, but it will not cause enlargement of the lymph nodes. If after benign thyroid nodule resection, wound infection can lead to local traumatic inflammatory reaction, which may also lead to lymph node enlargement, patients should seek medical treatment in time for anti-inflammatory and anti-swelling treatment. Postoperative antibiotics such as intravenous penicillin and levofloxacin are usually needed for 3-5 days to prevent infection. Patients are advised to pay attention to the protection of the wound after surgery, change the dressing regularly, do not make it contaminated, and keep the dressing clean and dry to avoid the occurrence of infection.