Abstract: A method, an apparatus and a device for generating a ruled surface machining path, and a medium relate to the field of numerical control machining technologies. The method includes: acquiring each target ruled surface in a three-dimensional diagram of a target workpiece to be machined; generating a mathematical model of each target ruled surface according to each target ruled surface; determining a current machining speed according to the mathematical model and preset machining process parameters; and calculating machining path data corresponding to the target ruled surface according to the current machining speed. The technical problems of large errors and lack of control and compensation on natural defects of “soft knife” machining in the existing ruled surface machining method are solved. The beneficial effects of reducing errors of ruled surface machining and improving control and compensation on the natural defects of “soft knife” machining are obtained.