Provided are novel pigment-containing aliphatic polyester resin fine particles obtained by: forming an emulsion in a system for causing phase separation in a polymer solution obtained by mixing an aliphatic polyester resin (A) selected from the group consisting of aliphatic polyesters obtained from aliphatic hydroxycarboxylic acids, aliphatic polyesters obtained from aliphatic diols and aliphatic dicarboxylic acids and/or ester-forming derivatives thereof, and aliphatic polyesters obtained from lactones, a resin (B) which is different from the aliphatic polyester resin and induces phase separation, a pigment (C), and an organic solvent (D), to obtain two phases, i.e., a solution phase containing the aliphatic polyester resin (A) as a main component and the pigment, and a solution phase containing the resin (B) as a main component； and bringing the emulsion into contact with a poor solvent (E) for the aliphatic polyester resin (A) to cause precipitation of aliphatic polyester resin fine particles containing the pigment (C), wherein the contained amount of the pigment (C) is 1.5-40 mass, and the average particle size is not less than 1 μm but less than 100 μm. The present invention provides novel polymer fine particles that serve as a colorant having high color developability and that improve the handleability such as fluidity and dispersibility of a pigment, and, when used as a cosmetic additive, facilitate removal of a cosmetic, and are less likely to cause color transfer to the skin.L'invention concerne de nouvelles particules fines de résine de polyester aliphatique contenant un pigment, obtenues : par formation d'une émulsion dans un système pour provoquer une séparation de phase dans une solution de polymère obtenue par mélange d'une résine de polyester aliphatique (A) choisi dans le groupe constitué par des polyesters aliphatiques obtenus à partir d'acides hydroxycarboxyliques aliphatiques, des polyesters aliphatiques obtenus à partir de diols aliphatiques et d
