The liquid detergent composition is provided with a high detergency and ensuring a good dispersion stability of builder particles and comprises a liquid dispersion containing (a) 30 mass % or more of a specific inorganic builder particle and (b) a block or graft polymer having a carboxyl group (i) and a polymer chain (ii), having, as its structural unit, an alkyleneoxy group, the composition having a viscosity (25.degree. C.) of 3000 mPas or less and a volumetric separation rate (25.degree. C., allowed to stand for 30 days) of 5% or less.