Meckel diverticulum is the most common anomaly of the gastrointestinal tract in a pediatric population. Majority of Meckel diverticulum is asymptomatic, but 25% become symptomatic. Clinical symptom from complications of Meckel diverticulum occurs more commonly in children than adults. Sixty percent of Meckel diverticula become symptomatic before 10 years old. Frequent complications of the Meckel diverticulum are hemorrhage and intestinal obstructions. Acute Meckel diverticulitis usually manifests as abdominal pain, fever, and vomiting. The clinical presentation may be indistinguishable from that of acute appendicitis, infantile colic or other diverse diseases causing abdominal pain. Understanding of the sonographic findings of complicated Meckel diverticulum is important because it will make the preoperative diagnosis possible. The purpose of this exhibition is to illustrate the sonographic manifestations of complicated Meckel diverticulum in children.