The subject innovation is a heater in the present invention relates to a steam roasting apparatus devised to prevent a case in which the steam, yet so that a steaming change the wavy due to the heat during steaming roasted is burnt or a fire, particularly, gimguyi device body inside the upper and lower sides by installing a wrap transfer conveyor, when burning the steam as the feeding of the steam done stably, steaming, and other or which prevent that due to a fire in advance, and therefore is to be able to maximize the commercial value.
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