The invention relates to the technical field of an oil pump, discloses an oil pump lining press fitting clamp and relates to a work piece. The oil pump lining press fitting clamp comprises an oil press, wherein the oil press is provided with a workbench; a base is arranged in the center of the workbench; a work piece locating shaft which is matched with the work piece is arranged in the center of the workbench; the work piece locating shaft is provided with a guiding shaft; the guiding shaft is sleeved with a pressing handle; a pressing head is arranged right above the pressing handle; a valve handle is arranged on the oil press; the valve handle controls the pressing head to move up and down. The oil pump lining press fitting clamp has the advantages that the structure is simple, the operation is simple, the working efficiency is improved effectively, the product quality is improved, and the cost is reduced; hydraulic pressure is adopted as a power source, the power is stable, and a stressed member can be uniformly stressed; a lining is vertically, smoothly and steadily pressed into an axle hole of a pump body under the locating of the guiding shaft, the locating is accurate, and the perpendicularity of an inner hole of the lining against the bottom face of a big hole of the oil pump body is guaranteed.