Disclosed is a composition containing a specific oligosaccharide and a bivalent metal cation, which exhibits an effect on the amelioration, treatment or prevention of allergy or topical inflammatory reactions in an extremely safe and effective manner compared to synthetic oral steroid medicines in spite of a fact that the composition contains components that are generally familiar as a food or an ion occurring in living bodies and have no toxicity against living bodies when used at physiological concentrations. Specifically disclosed is a cell-cell adhesion enhancer in epithelial cells, which comprises 1-kestose and/or nystose and a bivalent metal cation as active ingredients. The enhancer can prevent the disruption of an epithelial cell-cell tight junction protein that causes the invasion of an allergen into the body, can repair the epithelial cell-cell tight junction protein or promote the formation of the epithelial cell-cell tight junction protein, whereby the epithelial cell-cell adhesion can be enhanced and the effective amelioration, treatment and prevention of allergic symptoms can be achieved.
