Eosinophilic gastroenteritis is dominated by Th2 immune response, and previously several studies demonstrated that various Th2 cytokines such as IL-5, IL-15, IL-13, IL-33, and thymic stromal lymphopoietin were related to EGE,26-28 but few research have ever illustrated the expression profile of IL-10 in EGE. This evidence concerns the gene IL5 and eosinophilic gastroenteritis.