Eosinophilic gastroenteritis (EGE) was a rare gastrointestinal disease that was seen in all ages usually associated with dyspepsia, diarrhea, vomiting, abdominal pain, blood loss in stools and malabsorption. We reported a six-month-old boy with RECTORRHAGIA, family history of allergy, elevated IgE and eosinophil in blood with normal endoscopy. Because of eosinophilic infiltration in lamina properia in colon, diagnosis of EGE confirmed and oral corticosteroid initiated. Patient had symptomatic response and was doing well. The heterogeneity in the clinical presentation of EGE determined by the site and depth of eosinophilic intestinal infiltration and lower gastrointestinal bleeding, although was rare but may be one the clinical manifestations of disease in patients with allergic eosinophilic gastroenteritis (AEG).