To provide a machine tool which certainly avoids interference of a tool, a spindle and a work at the time of changing the tool.

A Z axis is returned to a simultaneous working position (S1) when a tool changing process is started. Continuously, it is judged whether evacuation positions are set on XY axes (S2), and the XY axes are moved to the evacuation position (S4) when they is set. The evacuation positions are positions to avoid an interfering object when the object to interfere with the tool, etc. exists in a route where a table to hold the work moves from a current working position to a following working position. Continuously, a tool changing action is practiced at S5, and thereafter, XYB axes are moved to the following working position (S6).