The disclosure provides a manufacturing method for a fuel cell. The method includes a heating adhesion step in which a separator and a resin frame are adhered to each other. The heating adhesion step includes a plurality of heating steps in which a laminate is heated, and a conveyance step in which the laminate is conveyed between the heating steps. In the conveyance step, a support portion having a projecting portion projecting towards the laminate is used, and the laminate is supported only by the projecting portion and conveyed.