The utility model provides a high-pressure oil pump support of a direct injection engine, which is used for solving the problems that the existing high-pressure oil pump supports are low in rigidity, poor in working stability, and the like. The technical scheme is that the rear end is closed; a high-pressure oil pump mounting flange is arranged at the front end; the bottom surface is a mounting fixing surface; a high-pressure oil pump tappet mounting hole is formed in the middle of the high-pressure oil pump mounting flange; and the high-pressure oil pump support is provided with three support mounting bolt bosses, and the height of every support mounting bolt boss ranges from 18mm to 20mm. The improvements on the support include that the support mounting bolt bosses are heightened; I-shaped reinforcing ribs and a sector-shaped reinforcing rib are arranged at positions under severe stress conditions; an anti-turning tappet groove is arranged in the high-pressure oil pump tappet mounting hole; the main body of the high-pressure oil pump support adopts a structure opened on one side and closed on the other side; therefore, the overall structure is more compact and symmetrical, the operational reliability and stability of the high-pressure oil pump support are improved greatly, the weight of the high-pressure oil pump support can be reduced simultaneously, the casting technique is improved, and the high-pressure oil pump support is suitable for mass production.