The invention discloses a manufacturing process of a high-speed precision bearing steel ball. The high-speed precision bearing steel ball is made of mould casting GCr15 vacuum degassing refining bearing steel as a raw material. The raw material is subjected to ball billet forming, ball polishing, heat treatment, ball milling, surface reinforcing, preliminarily grinding, flaw detection, fine grinding, super fine grinding, cleaning, rust prevention and package to obtain a finished product. The ball billet forming comprises two working procedures, i.e. lightly pulling the raw material and automatically cutting and cold forging and forming. The manufacturing process is characterized in that the raw material is lightly pulled before the ball billet forming process is carried out, the diameter of the material which is lightly pulled is reduced by 0.2-0.3 mm and then cold forging is carried out; and in the working procedure of cold forging, the compression ratio of the raw material is controlled to be between 1.9 and 2.5, the formed ball billet is in a state of no annular belt or a micro annular belt and does not have two obvious pole posts. The invention has the advantages that the high-speed precision bearing steel ball with high precision, low noise, stable quality and no surface defects can be produced by using the process.