To provide a composite molded product constituted so that a resin molded body and a rubber molded body having an undercut part are strongly bonded and integrated.

A silicone rubber layer (B)3 showing adhesiveness with respect to a resin is bonded to the resin molded body (A)2 and the rubber molded body (D)5 having the undercut part is bonded to the silicone rubber layer (B)3 through a silicone adhesive layer (C)4 to constitute the composite molded product 1 wherein the resin molded body 2 and the rubber molded body 5 are integrated. By this constitution, the composite molded product wherein the resin molded body and the rubber molded body are strongly integrated can be obtained.