This cylindrical hydraulic return oil filter element is specially designed for construction machinery such as excavators, loaders and cranes. It adopts a robust metal shell with perforated mesh structure, which can effectively protect the internal high-precision filter media. The product can efficiently remove metal debris, particulate contaminants and sludge from the hydraulic return oil, so as to protect key hydraulic components like pumps and valve groups from wear and tear, extend the service life of the equipment, and ensure stable operation of the hydraulic system under harsh working conditions.