Upper gastrointestinal bleeding in infant and children is much less common than that in adults. Upper gastrointestinal bleeding in infants and young children is most often acssociated with stress ulcer or erosions, but in older children it may also be caused by duodenal ulcer, esophagitis, and esophageal varices. Because the total blood volume of a child is relatively small and can deplete rapidly, gastrointestinal bleeding is a catastrophic event. However, it is not associated with significant mortality except in those with a severe primary illness. Data on therapeutic endoscopy for pediatric gastrointestinal bleeding are limited to case reports. The hemoclip has recently been added to armamentaria of endoscopic devices. This method has several advantages, including fewer complication and the fact that less expertise is needed to achieve permanent hemostasis. We report a case of successful endoscopic control of a bleeding duodenal ulcer using with a hemoclip in a 22-month-old boy. Endoscopic hemoclipping would be a safe and efficacious treatment for control of bleeding from peptic ulcers in children.