The invention discloses an energy-saving cooking range device for the catering industry. The cooking range device comprises a casing and is characterized in that a plurality of pots are connected at the upper part of the casing; combustion chambers are arranged below the pots; the upper ends of the combustion chambers are connected with the casing; the bottoms of the combustion chambers are connected with a plurality of grates; slag ways below the grates are connected with the outer bottoms of the combustion chambers and penetrate through the casing; and flues are connected onto the side walls among the combustion chambers in a through manner and are connected with smoke tubes penetrating through the casing. The cooking range device adopts the reasonable structure and is novel and ingenious in idea, fuel can be burnt sufficiently, fuel waste residues can be discharged smoothly and easily, meanwhile, lost heat can be sufficiently used for heating water in the casing, besides, the temperature of the casing is reduced, cooks can be prevented from being scalded, and particularly, the waste heat of discharged smoke is also sufficiently used for heating the water in the casing, so that the heat produced through combustion of the fuel is sufficiently used, the energy-saving performance is very high, and the cooking range device has the very good application prospect.