Steam boiler capable of recycling waste heat

The utility model relates to the technical field of boilers. The invention relates to a boiler, in particular to a steam boiler capable of recycling waste heat. Boiler comprising a boiler housing, a first guide plate is arranged on the circumferential inner wall of the boiler shell close to the bottom; a plurality of first through holes are formed in the first flow guide plate; a second guide plate is arranged on the circumferential inner wall, close to the top, of the boiler shell; a plurality of second through holes are formed in the second flow guide plate; a heat exchange pipe is arrangedbetween the first flow guide plate and the second flow guide plate in the boiler shell; the water inlet end and the water outlet end of the heat exchange pipe extend to the outer part of the boiler shell and are tightly welded with the boiler shell; according to the steam boiler capable of recycling the waste heat, heat energy can be conveniently and fully converted, and the heat energy recyclingefficiency is improved. Th