Provided is a heating apparatus for generating coating vapors for coating a base metal (steel sheet) which continuously moves in a vacuum. Also, provided is a coating device comprising said heating apparatus. According to the present invention, a coating material generated as the coating vapor is supplied in a solid (solid state) during an early stage and converted to a liquid (liquid state) afterwards and supplied to a heating unit, thus preventing the erosion of equipment and the like caused by the direct supply of a liquid coating material and preventing the temperature of the coating material from being lowered by the supply of a solid wire, thereby ultimately maximizing energy efficiency of the heating apparatus.