A filtering mechanism of an oil press comprises an oil filtering mechanism (1) disposed below an oil outlet of a press chamber of the oil press. The oil filtering mechanism (1) comprises: an oil container (11), a fine-filtering container (12), a fine-filtering mesh (14), and a coarse-filtering container (13). An opening is provided on the top of the oil container (11). The fine-filtering container (12) is placed on the top of the oil container (11). The fine-filtering container (12) is open on the top, and has several oil through holes evenly disposed on the bottom. The fine-filtering mesh (14) is laid on the internal bottom of the fine-filtering container (12). The coarse-filtering container (13) is placed on the top of the fine-filtering container (12). The coarse-filtering container (13) comprises a container body (131) having openings at the top and the bottom, and a coarse-filtering mesh (132) connected and fixed to the interior of the container body (131). The container body (131) and the fine-filtering
