Milling machine

The invention relates to a milling machine which comprises a base and a workpiece fixing tooling, wherein a placement platform for placing a corresponding stirring shaft is arranged on the base; the workpiece fixing tooling is arranged above the placement platform; a left vertical frame is arranged on the left side of the placement platform, on the base; at least two left milling heads are assembled on the left vertical frame along the front-to-back direction at interval in a rotating manner, rotating axes of the at least two left milling heads extend along the left-to-right direction, and the at least two left milling heads are driven by a left power mechanism; the milling machine also comprises a driving mechanism which is connected with the placement platform or the left vertical frame in a driving manner, so the placement platform and the left vertical frame are driven to oppositely move in the vertical direction. According to the milling machine disclosed by the invention, the problem that the processing efficiency of the stirring shaft is low due to the fact that a flat groove is only milled by the existing milling machine each time is solved.