An assembly shelf (10) includes a post (1) that includes two main post sections (11) and a connection section (12) that connects the main post sections (11), the post (1) having a symmetrical shape with respect to a post axis, a plurality of through-holes (131) being formed in the connection section (12) along a longitudinal direction at regular or irregular intervals, a pair of connection members (2), each of the pair of connection members (2) including a first engagement section that engages the post (1), and a second engagement section that engages a shelf board member, the pair of connection members being attached to hold either side of the post (1) utilizing a range that corresponds to half of the post (1) in a lateral direction; and a shelf board member (3) that includes a third engagement section that is formed approximately at each corner and engages the second engagement section, the pair of connection members (2) and the shelf board member (3) being positioned within the range that corresponds to half of the post (1) in the lateral direction.