The invention relates to a combined numerical control milling machine, which belongs to the technical field of mechanical machining. The combined numerical control milling machine comprises an electric spindle of a machine tool, electric spindles of end mills, a mill disc, a ram-type beam, a machine body, the helical-edge end mills, a transverse feeding working table, a vertical feeding working table, a lifting table, a base, a control system, a movable contact sliding ring, a movable contact contactor, an insulating ring and a lead wire, wherein the control system controls the electric spindle of the machine tool and the electric spindles of the end mills to rotate; the electric spindle of the machine tool drives the mill disc fixedly connected with the electric spindle of the machine tool to rotate; and the control system simultaneously controls the transverse feeding working table, the vertical feeding working table and the lifting table to move, so that the planes of workpieces on the transverse feeding working table are machined. According to the numerical control milling machine provided by the invention, the plane milling efficiency can be effectively improved, the cutting force and the cutting head are reduced, the service life of the mills is prolonged, and the vibration of the tool machine can be alleviated.