The utility model discloses a steam boiler device, specifically speaking are straw gasification direct combustion steam boiler device, including the boiler, boiler and controller electric connection, the boiler divide into furnace body and furnace, and the furnace body passes through the pipe connection heat exchanger, and the heat exchanger is through another pipe connection furnace body, furnace's front end bottom has connected gradually cyclone, draught fan and real empty can through pipe connection air -blower, furnace rear end through the pipeline, and cyclone, draught fan and real empty can front end all are equipped with the automatic control valve door, and real empty can connects gradually aspiration pump and furnace through another pipeline, is equipped with the automatic control valve door between real empty can and the aspiration pump, and this furnace 1 is energy -concerving and environment -protective, utilizes the wide range, and furnace 2 can return and recycle the resource.