Acute appendicitis is the most common acute abdomen in children. The younger the child with appendicitis, the more atypical the symptoms are. Perforation, necrosis, and diffuse peritonitis can occur in a short period of time. If the diagnosis and treatment are not timely, it will lead to serious complications and even death, so it should be taken seriously. So far, domestic and foreign reports have shown that the misdiagnosis rate of acute appendicitis in infants and young children is 35% to 50%, and more than 90% in newborns. The resulting perforation rate is 33% to 52%, and the rate of appendectomy without inflammation is 10% to 30%. Postoperative complications are as high as 10% to 20%, and the mortality rate is still above 0.01%.