Disclosed is an apparatus for manufacturing a tooth model aids. The apparatus for manufacturing a tooth model, which is configured to dewax when molding a tooth model so as to manufacture a dental denture, may include an outer housing, an inner container installed in an inside of the outer housing, a flask unit installed in an inner space part of the inner container. The flask unit includes a mounting plate on which a flask is configured to be mounted, and a cover, the mounting plate of the flask unit includes a wax collection hole on a bottom of the mounting plate, and the cover includes a nozzle which is configured to selectively inject hot water or steam to the flask, the nozzle being formed at a location corresponding to a location of the flask.