Eosinophilic esophagitis(EoE)is a chronic autoimmune inflammatory disease characterized by accumulation of eosinophils in all layers of esophagus and lacking typical clinical manifestations. The pathogenesis has not yet been clarified. Diagnosis is mainly by combined judgment,including clinical manifestation,endoscopy and histopathology. Treatment includes food,drug and surgical therapy. This article reviewed the advances in study on EoE.