The invention relates to a gasoline direct injection high-pressure fuel distribution pipe manufacturing method. The method includes the specific steps that 1, hot forging forming is conducted on a main rail blank; 2, the plane and holes are machined in mounting supports; 3, the planes of the two ends of the main rail blank are machined, the forged surface is removed, the two ends are made to be circular planes, and the planes are perpendicular to the center line of a main pipe; 4, deep hole machining is conducted, 5, the sensor corresponding side on the main rail blank is machined, 6, the plug corresponding side on the main rail blank is machined; 7, an oil injection connector on the main rail blank is machined; 8, oil spray device bases are machined; 9, cleaning is conducted; 10, a plug is mounted; 11, a sensor is arranged; 12, a product obtained after sealing detection is conducted is sealed. The product obtained through the method is good in sealing performance, relatively small in part number, free of risk of deformation and leakage due to rack of fusion, relatively simple in process and free of brazing process and the like, energy sources are saved, and the potential safety hazards existing in machining are reduced.