The invention provides a swirling tool knife and swirling fastening equipment, and belongs to the field of building equipment. The swirling tool knife comprises a handheld part, an operating ring, an auxiliary fastening rod and a tightening rod, wherein the tightening rod is provided with a first tightening end and a second tightening end; the first tightening end and the second tightening end are different in specification; the tightening rod is rotatably connected onto the handheld part; the tightening rod rotates relative to the handheld part to realize switching of the first tightening end and the second tightening end; a limiting assembly is arranged on the handheld part for limiting the tightening rod to rotate relative to the handheld part; the end part, away from the tightening rod, of the handheld part is provided with a mounting slot; an operating ring is in threaded connection on the peripheral surface of the auxiliary fastening rod; the operating ring is rotatably connected on the handheld part; the operating ring is in axial limiting connection with the handheld part; and one end of the auxiliary fastening rod is positioned in the mounting slot, and is in peripheral limiting connection with the handheld part. The swirling tool knife is convenient to carry.