The invention relates to a glass manufacturing method and a glass manufacturing apparatus. The purpose of the present invention is to provide a method for manufacturing glass which is restrained to slide on rollers for glass tapes when a plurality of rollers convey the glass tapes. The present invention provides a glass manufacturing method. The method comprises configuring glass tapes molded in a float furnace on the top of the plurality of rollers, and performing the glass tape conveying process through the plurality of rollers, wherein among the plurality of rollers, selecting more than one roller to connect a torque applying unit which applies torque to the rollers; and during the conveying process, based on the speed of the glass tapes, controlling the torque of the rollers which are connected with the torque applying unit.