The form panel for placing concrete of the present invention is a form panel (30) comprising a hollow sheathing section (32) made of plastic, one side of which forms a concrete placing surface (31), and hollow side panel sections (33) bent out at right angles from both side edges of the sheathing section (32) on an opposite side of the sheathing section (32) to the concrete placing surface (31), wherein projecting sections (40) which extend in a vertical direction are provided on an outside surface (38) of the side panel section (33), and one of the sides of one of the projecting sections (40) is coplanar with the concrete placing surface (31) of the sheathing section (32), and on the projecting sections (40), notches (41) are formed at respectively the same position and orthogonal to the longitudinal direction of the projecting sections (40). This type of form panel (30)allows the formwork fittings used with conventional plywood form panels to be used at the time of erection (installation), is lightweight and has good workability, is durable, does not easily leak concrete, and can be recycled.