Disclosed is a heat supplying furnace for a flue-cured tobacco room. The heat supplying furnace for the flue-cured tobacco room comprises a furnace body, a heat exchanger and a chimney. The furnace body comprises a furnace wall, a fire pit, an ash pit and a furnace bar part. The furnace bar part comprises a fixing furnace bar installed between the fire pit and the ash pit. The heat supplying furnace further comprises a vapor supplying system. The vapor supplying system comprises a water storage part, a heating pipe and a vapor conveying part. The heating pipe is arranged on the fixing furnace bar. According to the heat supplying furnace for the flue-cured tobacco room, the heat supplying surface with two functions is provided. A movable furnace bar is taken and the vapor supplying system is started. Burning matters are arranged on the movable furnace bar. The flue-cured tobacco is only heat supplied. The regular use of the heating pipe under the superhigh temperature is guaranteed by the selection of special material qualities. Compared with the prior art, the heat supplying furnace for the flue-cured tobacco room has the advantages of being simple in structure, low in cost, flexible in selection and high in reliability.