The invention discloses a broken screw tap taking-out device and a taking-out method, and belongs to the technical field of thread machining. The broken screw tap taking-out device comprises a taking-out body, a clamping head is manufactured at the front end of the taking-out device body, the clamping head is provided with a plurality of clamping claws corresponding to a chip pocket of a screw tap, and a handle is fixed to the rear end of the taking-out device body. The taking-out method comprises the steps that the clamping head is inserted into the chip pocket of the screw tap, the handle is rotated to screw out the broken screw tap, threads can still be machined, the broken screw tap is taken out, meanwhile, integrity of the threads are guaranteed, and convenience and effectiveness are achieved.