Gastroparesis is rare in children and is defined as delayed emptying of gastric contents into the duodenum without mechanical obstruction. We experienced a case of gastroparesis in a 7-year-old boy after a viral illness. He was admitted because of excessive abdominal bloating and diffuse abdominal pain, and was diagnosed by clinical manifestations and measurement of the gastric emtpyting time. He recovered after dietary management and with commbined medication of erythromycin and domperidone in 50 days of illness.