The invention relates to the technical field of rubber pyrolysis devices, in particular to an energy-saving rubber pyrolysis device. The energy-saving rubber pyrolysis device comprises a base, wherein six supporting legs are evenly distributed on the periphery of the lower side of the base, a heating base is arranged on one side of the upper portion of the base, a heating device is installed in the middle of the upper side of the heating base, the upper portion of the heating base is fixedly connected with a heating furnace, the heating device is communicated with the lower portion of the heating furnace, and the inside of the heating furnace is of a cavity structure. The heating device is communicated with the lower portion of the heating furnace, and the inside of the heating furnace is of the cavity structure, so that the heating device directly heats a pyrolysis bin, the energy transfer efficiency is higher, and the energy utilization rate is improved. A natural gas valve is arranged at the left end of the front side of the heating device, and a combustible gas valve is arranged at the right end of the front side of the heating device so that the proportion of natural gas and combustible gas can be freely adjusted as required, the combustible gas produced during pyrolysis can be used for completely replacing the natural gas in an ideal state to provide energy for the heating device.