<p>Disclosed is an aliphatic polyester resin composition characterized by containing a (3-hydroxyalkanoate) polymer (A) and an acrylic block copolymer (B) at a weight ratio of from 99/1 to 10/90. This aliphatic polyester resin composition is also characterized in that the acrylic block copolymer (B) is composed of an acrylic polymer block (a) and a methacrylic polymer block (b), and at least one of the polymer blocks has a reactive functional group (c).</p>
