To prevent falling of a base material being vacuum-adsorbed while maintaining easy exchangeability of the base material without causing increase in the number of components.

The device for manufacturing a substrate is provided with a base material 52 having a projected part 52b on a surface opposing to a dipping surface 52a, a base material receiving stage 50 in which one end of each suction hole 81 is opened in the surface engaging with the projected part 52b, and a vacuum adsorption mechanism 8 for vacuum-adsorbing the projected part 52b to the base material receiving stage 50 by exhausting a gas in the suction holes 81. The base material 52 is vacuum-adsorbed to the base material receiving stage 50 in such a state that the projected part 52b is engaged with a dovetail groove 50a of the base material receiving stage 50.