The invention relates to the technical field of medical equipment shell machining equipment, in particular to an edge trimming device for a medical equipment shell. The device comprises a rack. A guide mechanism for guiding the shell is arranged on the upper surface of the rack. A cutter mechanism obliquely arranged and used for cutting the shell is arranged on one side of the guide mechanism. A baffle perpendicular to the cutter mechanism is arranged on the other side of the guide mechanism. The baffle is located above the guide mechanism and abuts against the guide mechanism. At least two groups of connecting rods are fixedly arranged at the side, far away from the cutter mechanism, of the baffle. The two groups of connecting rods are fixed to a cross rod. A telescopic rod which is far away from the baffle vertically is fixedly arranged in the middle of the cross rod. A telescopic support rod is fixed to the end, away from the cross rod, of the telescopic rod. The support rod is fixed to the rack. The edge trimming device for the medical equipment shell is simple in structure, reasonable in design and convenient to operate, the efficiency of cutting products can be improved, andthe quality of the cut products can be guaranteed as well, so that the cutting cost is reduced, and the enterprise benefit is increased.