The utility model provides an energy-saving gas furnace, which comprises a furnace body and a mixed gas chamber, an infrared radiation panel and an induction tunnel that are arranged in the furnace body. The energy-saving gas furnace is characterized in that an energy-concentrated reflection device is arranged at the upper end of the furnace body and comprises an inner reflection ring arranged at the periphery of the infrared radiation panel, and an outer heat insulation ring connected with the inner reflection ring, wherein the top end of the inner reflection ring is higher than the top surface of the infrared radiation panel. By virtue of the energy-concentrated reflection device mounted at the periphery of the infrared radiation panel and formed by the inner reflection ring and the outer heat insulation ring, of which the top end is higher than the top surface of the infrared radiation panel, the utility model, when used for combustion, can not only reflect a large proportion of heat energy radiated outwards for secondary use through the inner reflection ring, but also ensure that portion of the heat energy absorbed by the inner reflection ring can hardly be radiated outwards and lost due to the heat insulation function of the outer heat insulation ring, thereby effectively improving the utilization ratio of the heat energy, and achieving the purpose of energy conservation.