Electric spindle and machine tool

The utility model provides an electric spindle and a machine tool, and belongs to the technical field of electric spindles. Comprising a shaft core, the shaft core is provided with a first end and a second end which are oppositely arranged in the axial direction of the shaft core, the second end of the shaft core is provided with a shaft core matching surface and used for being connected with a cutter handle, and the shaft core matching surface of the second end of the shaft core is used for being matched with a cutter handle matching surface of the cutter handle; the motorized spindle has a cutter clamping state when the shaft core matching surface is attached to the cutter handle matching surface and a cutter loosening state when the shaft core matching surface is separated from the cutter handle matching surface; wherein the shaft core is provided with a shaft core cooling flow channel, the shaft core cooling flow channel is provided with at least one shaft core cooling flow channel outlet, and the outlet