Rotatable milling tool

The utility model provides a rotatable milling tool. The rotatable milling tool comprises a base, a supporting rod and a clamping disc. The base is matched with a machine tool so that the base can be clamped on the machine tool. The supporting rod is erected on the base. The clamping disc is arranged at the top end of the supporting rod. A limiting block matched with the hole of the workpiece is arranged on the clamping disc in a protruding mode so that the limiting block can be tightly attached to the hole wall of the hole when the workpiece is clamped on the clamping disc. The clamping disc is further provided with a clamping buckle matched with the workpiece. A workpiece is fixed to the clamping disc, and the clamping disc is fixed to the top end of the supporting rod, so that the supporting rod supports the clamping disc and the workpiece. The base is clamped on a machine tool, and then the workpiece can be milled through the machine tool. After one part of the workpiece is machined, the base is loosened