To provide an inexpensive scaffold assembling set, easy in assembling, for improving working efficiency in rainy weather, without staining a side wall of a building by a raindrop falling from an upper footboard, in work at a work site in the rainy weather.

A scaffold is composed of a plurality of columns 21 arranged in the vertical direction from the ground surface of the work site, a bracket 22 detachably installed between the columns 21 by extending in the vertical direction from the columns 21, and a scaffold plate 23 detachably installable between the brackets 22; and is constituted so that rainwater is gathered by a first rain gutter 23b of the upper scaffold plate 23, and the rainwater is discharged outside, by flowing in a flow passage in the columns 21 via a second rain gutter 22c arranged on the bracket 22.