Stomach pain a few days after minimally invasive surgery for appendicitis may be due to incomplete intestinal obstruction, normal postoperative reaction or inflammation. 1. Incomplete intestinal obstruction: when there is infection in the abdominal cavity or surgical operation causes damage to the plasma membrane of the intestinal tubes, or the patient does not eat properly after the operation, adhesions between the intestinal tubes may be formed after the operation, resulting in incomplete intestinal obstruction. At this time, there will be intermittent colic, pain intermittent episodes, sometimes light and sometimes heavy. 2. Normal postoperative reaction: Because appendectomy can cause irritation to the intestinal tract, patients will have postoperative pain, which usually improves as the wound heals. 3. Inflammation: When there is exogenous infection of the wound or endogenous infection caused by the outflow of intestinal contents, patients may experience pain caused by peritoneal inflammation. It is recommended that the patient should consult a doctor in time, complete the examination, clarify the condition and follow the doctor’s instructions for treatment.