The invention provides an industrial energy-saving boiler system which comprises a boiler main body, a gas supply portion, a waste slag treating portion, a water supplement portion and a dust removalportion. The boiler main body is mainly composed of a partition plate, a heating boiler body, a hearth portion, a water storage tank and a heat exchange pipe. The partition plate divides an inner cavity of the boiler main body into a left chamber and a right chamber, the heating boiler body and the hearth portion are arranged in one chamber, the water storage tank and the heat exchange pipe are arranged in the other chamber, the inner side wall of the heating boiler body is of a vortex structure, the heating boiler body is arranged to communicate with the water storage tank, the inner side wall of the hearth body is also arranged to be of a vortex structure, the side wall of the hearth body is arranged to be connected with the gas supply portion, a slag outlet formed in the bottom wall ofthe hearth body is arranged to be connected with the waste slag treating portion, the hearth body is arranged to communicate with the front end of the heat exchange pipe, the top of the water storagetank is arranged to communicate with the water supplement portion, and the tail end of the heat exchange pipe is arranged to communicate with the dust removal portion. By the adoption of the system, fuel energy of the boiler can be sufficiently utilized, production efficiency is improved, and it is ensured that the heating process of the boiler body is stable.