The length of thyroid tumor surgery varies. For simple surgery, it takes 20-30 minutes to finish, this time is mainly the simple surgery time, the actual surgery time as understood by the general public is counted from the time the patient enters the operating room to the time the patient comes out of the operating room, during the process of entering the operating room, there are many preparations, including a series of events such as positioning in the operating room, preoperative anesthesia, postoperative anesthesia awakening, etc. In conclusion, the operation time for simple benign tumor may be 20-30 minutes, but for complex thyroid tumor surgery, such as expanded radical thyroid cancer, or even concurrent combined organ removal and bilateral neck lymph node dissection, the operation time may be prolonged and take 2 or 3 hours. In conclusion, the surgical effect is more important than the surgical time, not just the length of the surgery, but the surgical effect, the safety of the surgery and the good recovery, which is the common goal pursued by doctors and patients. The operation time is more important than the operation effect. The operation time is counted from the ordinary patients or family members, and the operation time is counted from the time the patient is pushed into the operation room. Some hospitals have large operation rooms, more than 40 operation rooms, and after entering the operation room, the nurse assigns the operation room, pushes from the entrance of the operation room to the operation room, enters the operation bed from the ordinary push bed, poses, prepares for anesthesia, finally anesthesia, and then starts the operation. The anesthesia time is called pre-surgical preparation time is quite long, some hospitals may 20 minutes, some even half an hour, different from hospital to hospital, the patient’s tolerance level of anesthesia is also different. After the start of anesthesia, the surgery starts only after the anesthesia is good, and the simple surgery time may be 20 minutes or 30 minutes, and when the surgery is done, the main surgeon is already off the operating table, but at this time the main anesthesiologist is still doing the anesthesia awakening work, and the anesthesia awakening work also varies from person to person, some may take an hour to awaken, some 10 minutes to awaken. Therefore, the operation time is strictly divided into the narrow sense of the operation time and the broad sense of the operation time, the narrow sense is the simple operation, the broad sense is from the operating room into the patient to push out, this is the broad sense of the people understand the operation time.