The present invention provides a composition that exhibits favorable fat absorption inhibitory activity, is capable of being safely and easily taken continuously without side effects, and further is capable of preventing and/or improving conditions associated with excessive fat absorption such as obesity and hyperlipidemia. The present invention relates to a fat absorption inhibitory composition, which contains as an active ingredient a component that is collected as insoluble matter obtained by extracting wheat germ with water at 65.degree. C. or lower and pH 5.0 or lower and treating the extract at 70.degree. C. or higher and pH 6.0 or higher.