To stably and effectively fix a sheet by forming part or entirety of a push fixing part for fixing a sheet of a drawing board and (or) a base plate opposed to the push fixing part of adhesive material adhesive to or releasable from the sheet in the case of constituting a sheet fixing mechanism such as the board having the fixing part.

The drawing board comprises a base plate body 2a formed in a rectangular shape with a predetermined thickness, and a base plate 2 having a band edge 11 thickly formed at its outer edge, and sheet fixing mechanisms 1 at four corners of the edge 11. The mechanism 1 has a mounting part 15 mounted at the plate 2 side and a push fixing part 3 made of a movable push part 3p bendably displaced via a hinge 4 thinly formed. In this case, an adhesive material M adhesive to or releasable from a sheet is separately formed at the part 3p, which is constituted by sticking it to a lower surface of the part 3p. A click engaging mechanism 5 having a ball 21 externally energized by a spring 22 is provided between the part 3p and the edge 11.