When you can eat after surgery depends on the patient’s surgical procedure, the recovery of gastrointestinal function, and the type of anesthesia, and cannot be generalized. If a body or extremity surgery is performed, such as lipoma resection, local anesthesia is usually chosen and does not usually affect eating after surgery. In case of general anesthesia, such as inguinal hernia repair, patients are usually not allowed to eat until 4-6 hours after surgery, and they need to gradually transition from a liquid diet to a normal diet. If abdominal surgery is performed, such as laparoscopic cholecystectomy, acute appendicitis, cholecystitis, or gastrointestinal tumor, the gastrointestinal function is not fully recovered 2-3 days after surgery, so it is not recommended to eat, and a liquid diet should be appropriate after the patient’s anus is exhausted. In addition, for surgical treatment of other diseases, the time of eating varies depending on the disease, and the specific time should be judged by the attending doctor. Patients should strictly follow medical advice after surgery in order to promote rapid recovery and prevent postoperative complications. In addition, patients who have undergone gastrointestinal surgery should strictly follow medical advice and never eat prematurely on their own to prevent serious complications such as gastrointestinal bleeding and gastrointestinal fistula, which can cause life-threatening problems.