To provide a method for stabilizing haematoccous pluvialis pigment, especially for improving light resistance.

This method for improving light resistance of haematoccous pluvialis pigment in food and drink comprises the addition of vitamin C and at least one kind selected from the group consisting of enzyme treated isoquercitrin, myricitrin, chlorogenic acid, rutin, isoquercitrin, rosmarinic acid, rosmanol, carnosol, catechin, enzyme treated rutin, and gallic acid.