In appendicitis, patients are treated with infusion therapy, which generally includes the following aspects: 1. Infusion of antibiotics for anti-infection treatment, generally the causative organisms of appendicitis are mostly various gram-negative bacilli and anaerobic bacteria in the intestinal tract. This is why penicillin and cephalosporin antibiotics should be infused, and can be combined with metronidazole injection for anti-infection treatment. 2. replenish the patient’s body fluids, generally infusion of glucose, sodium chloride, potassium chloride, and further adjustment according to the patient’s electrolyte situation, so as to improve the patient’s fluid imbalance. 3. give the patient nutritional support, whether before or after surgery. Intravenous nutrition solution should be infused through the vein. If the patient does not eat after surgery, the patient should be given intravenous supplemental patient nutrition and wait until the patient’s gastrointestinal tract function is restored before giving transoral feeding.