Abstract: The bleaching detergent composition in a form of granules or powders containing an organic peracid precursor which produces an organic peracid upon reaction with hydrogen peroxide in water, the organic peracid having an alkyl group with 7 to 19 carbon atoms, and a hydrogen peroxide releasing material, wherein the bleaching detergent composition comprises the following components a) to c): a) one or more surfactants; b) one or more crystalline alkali metal silicates; and c) one or more agents for capturing metal ions other than the crystalline alkali metal silicates b), wherein a total amount of the above a), b), and c) components in the bleaching detergent composition occupies from 70 to 99% by weight, and wherein the weight ratio of component b) to component a) is b/a=90/10 to 45/55, and the weight ratio of component b) to component c) is b/c=7/93 to 75/25, and wherein the weight ratio of the organic peracid precursor to nonionic surfactants used as component a) is from 10/90 to 70/30.