<;P>;PROBLEM TO BE SOLVED: To provide an anti-allergic agent synergistically enhancing the anti-allergic activity of a &beta;-glucan and exhibiting sufficient effects even by a small amount of ingestion and to provide an anti-allergic food comprising the anti-allergic agent. <;P>;SOLUTION: The anti-allergic agent comprises the &beta;-glucan and a lactic acid bacterium belonging to Pediococcus pentosaseus. The anti-allergic food comprises the anti-allergic agent. <;P>;COPYRIGHT: (C)2009,JPO&INPIT