The following tests are required before thyroid surgery: 1. Blood tests are required for routine blood tests, coagulation system, blood type, liver function, kidney function, blood glucose and virus series, etc. Blood tests are performed to see if the patient has elevated white blood cells, thrombocytopenia or abnormal liver or kidney function. If the blood glucose is high, it will affect the healing of the incision and is a contraindication to surgery. 2. The patient’s heart function is normal and can tolerate the surgical trauma, and the patient’s respiratory function is normal through chest X-ray.