The present invention relates to curable resin composition, paint comprising the same, and a plastic molded product produced by laminating a layer formed by the curable resin composition. The curable resin composition contains a composite resin (A) in which a polysiloxane segment (a1), which has a structural unit represented by a general formula (1) and/or a general formula (2) as well as having a silanol group and/or a hydrolyzable silyl group, and a vinyl-based polymer segment (a2) having an alcoholic hydroxyl group are bound to each other through a bond represented by a general formula (3); and a polyisocyanate (B). The content of the aforementioned polysiloxane segment (a1) with respect to the total solid content of the curable resin composition is 10 to 60 wt% and the content of the polyisocyanate (B) with respect to the total solid content of the curable resin composition is 5 to 50 wt%. (In the general formulas (1) and (2), at least one from R<1>, R<2>, and R<3> is a group which has the aforementioned polymerizable double bond).