PROBLEM TO BE SOLVED: To provide a reinforcement member of a board-like wall surface, by which a fixed object can be firmly held by fixing the fixed object to a concrete wall via a pedestal plug.SOLUTION: A reinforcement member of a board-like wall surface includes: an anchor member of which one end is embedded in a concrete wall and of which the other end projects in the board-like wall surface direction but does not project from the board-like wall surface; a pedestal plug which is columnar and has a length nearly equal to a distance from the concrete wall to the board-like wall surface, of which end face area is nearly equal to or more than that of an adhesive surface to the board-like wall surface of a fixed object, and which has an anchor hole through which an anchor member penetrates and closes a wall hole bored in the board-like wall surface; and a clamping member which holds the pedestal plug to the board-like wall surface via an anchor member while burying the anchor member in an end face on the boar
