Thyroid surgery time, usually related to the type of thyroid disease, type of surgery and anesthesia, is as follows: I. Type of thyroid disease: 1. benign tumors or nodules, hyperplasia-type lesions, usually 3 hours or less to complete. 2. hyperthyroidism, surgery usually 2-3 hours, preoperative treatment with hyperthyroid medication is required. 3. tumor surgery, thyroid cancer with peripheral lymph node contouring may take 5-6 hours or even 7-8 hours to complete. The surgery may take 5-6 hours or even 7-8 hours to finish; 2. Type of surgery: 1. surgery through cosmetic entrance or lumpectomy, the time may be extended; 2. surgery through the papilla to the corresponding side of the thyroid gland, and surgery of the thyroid gland from inside the mouth, the surgery time needs to be extended; 3. anesthesia: 1. local anesthesia, thyroid surgery can be done with cervical plexus anesthesia, the anesthesia wake up time is short, may be 20-30 minutes to wake up. 2. general anesthesia, more thyroid surgery can be done with cervical plexus anesthesia. 2, general anesthesia, more thyroid surgery need to be carried out under general anesthesia, the wake up time is relatively longer.