A novel refining method for propylene relates to the technical field of chemical equipment. A treating system used in the method comprises a material storage tank, wherein the material storage tank is communicated with a crude propylene tower, the bottom of the crude propylene tower is communicated with a first tank area through a water cooler of the crude propylene tower, the top of the crude propylene tower is communicated with a refined propylene tower through a pipeline, the bottom of the refined propylene tower is communicated with the top of the crude propylene tower by a pipeline, the refined propylene tower is communicated with a return tank of the refined propylene tower through a water cooler of the refined propylene tower, the interior of the return tank of the refined propylene tower is communicated with the top of the return tank of the refined propylene tower through a pipeline, and the interior of the return tank of the refined propylene tower is communicated with a second tank area through another pipeline. The novel refining method for the propylene has the advantages of being simple in structure, convenient to install, low in production cost, intelligent, environment-friendly, and capable of effectively removing propane impurities mixed in a material to obtain high-purity propylene products, thus improving the purity and the quality of chemical products and being suitable for large-scale promotion.