The invention discloses a composite heat treatment technology for a cylindrical roller bearing ferrule of an automobile transmission. The technology comprises the following steps of vacuum isothermal spheroidizing, vacuum nitriding, controlled atmosphere quenching and tempering. By means of the composite heat treatment technology, a dense high-hardness layer can be formed on the surface of the cylindrical roller bearing ferrule of the automobile transmission, the abrasion resistance and corrosion resistance of products are obviously improved, and the service life of the products is prolonged.