Patients with appendicitis can eat fish. Appendicitis is a very common disease, and patients with appendicitis can have metastatic right lower abdominal pain with fever, nausea and vomiting. Patients who are treated conservatively should rest in bed, abstain from eating and drinking, and can be given intravenous fluids to replenish calories and electrolytes. Patients with surgical indications need to undergo surgical treatment, and patients with postoperative appendicitis can eat and drink after anal defecation. Appendicitis patients can eat some fish, because fish is rich in high-quality protein, can supplement the body’s need for essential amino acids, enhance the body’s immunity, promote wound healing. In addition, patients with appendicitis after surgery should pay attention to the appropriate strengthening of nutrition, eat more fresh and easy to digest food, eat more fresh vegetables, fruits, as well as food rich in high quality protein to promote the recovery of the disease.