The invention relates to a hooked side face edge trimming machine of an oil pan. The machine comprises a machine base, a rotating shaft rotatably arranged on the machine base and a drive device for driving the rotating shaft; a convex die base is arranged on the machine base, the output end of the rotating shaft is eccentrically arranged, the output end of the rotating shaft is sleeved with a bearing, a concave die base is arranged on the machine base in a front-and-back sliding manner, the outer side of the circumference of the bearing is sleeved with the concave die base, and the concave die base is provided with an edge cutting concave die in a vertical sliding manner; the convex die base can slide in a left-and-right manner along the machine base, and a mounting base used for containing of the oil pan is arranged on the convex die base in a front-and-back sliding manner.