The invention relates to the technical field of machine tool equipment, in particular to a highly sensitive unmanned lathing-stop machine tool. The highly sensitive unmanned lathing-stop machine toolcomprises a machine tool body, wherein the machine tool body is horizontally provided with a lead screw and guiding shafts which are parallel to each other, and the lead screw and the guiding shafts are horizontally inserted into a sliding box in a penetrating mode. The sliding box is provided with a tool holder, a feed box is arranged on the top of one end of the machine tool body, and a spindlebox is arranged on the top of the feed box. A tailstock is arranged on the top of the other end of the machine tool body, and a multifunctional lamp is arranged at the edge of the machine tool body. Main power supply of the machine tool is arranged at one end of the machine tool body, and a pyroelectric infrared sensor is arranged on the surface of the machine tool body. A control box is arrangedon one side of the pyroelectric infrared sensor. The switching of the main power supply of the machine tool is realized by the pyroelectric infrared sensor sensing whether someone is near the machinetool or not, energy and electricity are saved, and the problem that the machine tool malfunction or an accident due to the fact that an operator forgets to stop the power supply of the machine tool isavoided.