Open appendectomy is a level II surgery and laparoscopic appendectomy is a level III surgery. 1. Open appendectomy: Open appendectomy is a level II surgery, which refers to the surgery with average technical difficulty, uncomplicated surgical procedure and moderate risk. Patients undergoing open appendectomy can be treated under epidural anesthesia and the complexity of the procedure is relatively low. 2. Laparoscopic appendectomy: Laparoscopic appendectomy is a tertiary surgery, which refers to a more technically difficult, complex and risky surgery. Patients undergoing laparoscopic appendectomy need to be operated under general anesthesia. The surgery requires the establishment of an artificial pneumoperitoneum and appendectomy through special laparoscopic instruments, which makes the surgical process more complicated compared to an open abdomen, more technically difficult and more demanding on the doctor’s skill level. It is recommended that patients with appendicitis seek timely medical treatment and follow the doctor’s instructions to choose the appropriate surgical method according to their physical condition, so as to avoid delays in their condition.