Appendicitis surgery usually takes 20-30 minutes, whether it is open appendectomy or minimally invasive appendectomy, if the surgeon is more skilled, 20-30 minutes is completely sufficient; plus the preparation before surgery and recovery from anesthesia after surgery, it is estimated to take about 1 hour. However, if the inflammation of the appendix is heavy, appendicitis has occurred frequently before, intra-abdominal adhesions are more obvious, perforated appendicitis, and the abdominal cavity is more contaminated, the operation time may be longer, and even bleeding and residual infection of the abdominal cavity can occur after the operation. If a young surgeon performs the surgery, he or she may not be very skilled and the operation time may be a little longer.