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This utility model belongs to the technical field of filtration equipment and discloses a crude oil impurity filtration device. This crude oil impurity filtration device includes a receiving cylinder, a sleeve, a filtration mechanism, and a drain pipe. The receiving cylinder has a receiving cavity, including an oil inlet and an oil outlet. The sleeve is fixed inside the receiving cavity to divide it into a first chamber and a second chamber. The oil inlet communicates with the first chamber, and the oil outlet communicates with the second chamber. The filtration mechanism includes a filter cartridge assembly and a rotating assembly. The filter cartridge assembly is located inside the second chamber and is fixedly connected to the sleeve. The filter cartridge assembly has multiple circumferential filter holes and an opening at its top that communicates with the first chamber. The rotating assembly is rotatably disposed inside the filter cartridge assembly and includes several spirally distributed helical blades. One end of the drain pipe is connected to the bottom end of the filter cartridge assembly, and the other end extends outside the receiving cylinder. This crude oil impurity filtration device has low maintenance costs and high filtration efficiency.