Whether or not a urinary catheter is needed for thyroid surgery is mainly determined by the severity of the disease, the duration of the surgery, and the patient’s own physical condition. If the operation time is short, the bladder can be emptied before the operation without inserting a urinary catheter; if the operation time is long, a urinary catheter is needed; if the operation is complicated, patients who need to stay in bed for a long period of time after the operation are recommended to have a urinary catheter inserted before the operation. 1. If the surgery for thyroid disease that requires surgical treatment is relatively simple and takes a short time, it can be handled without inserting a urinary catheter, but the bladder needs to be emptied before surgery. 2. To do thyroid cancer and other difficult surgery, the operation time will be extended, the operation is also relatively complex, the need for a longer period of postoperative bed observation, recuperation, it is recommended that the patient preoperative urinary catheter patients. Before doing the surgery must be specific assessment of the patient’s own condition, standardized treatment under the guidance of clinicians.