The invention discloses a bistable piezoelectric cantilever beam power generation box. The bistable piezoelectric cantilever beam power generation box comprises a stepping plate, a cover plate, a boxbody, gears, a rack, springs, sleeves, double-sided racks, jump fixtures, jump teeth, suspension beams and magnets, wherein the cover plate and the box body are connected via screws, the stepping plate is arranged above the cover plate and is connected with the rack, a lower end part of the rack is connected with the sleeve loaded with a spring, the rack is engaged with a small gear, the small gear and a large gear are coaxially fixed, the large gear is engaged with double-sided racks at two sides of the large gear, the double-sided racks are contacted with the jump teeth, the jump teeth are arranged on the jump fixture via the springs and a rotation shaft, the piezoelectric cantilever beams are arranged on the jump fixtures and are connected with the sleeve loaded with the spring, piezoelectric sheets are pasted on upper surfaces and lower surfaces of base layers of the piezoelectric cantilever beams, and the magnets are arranged on an inner wall of the box body and are opposite to magnetic poles of the magnets at tail ends of the suspension beams.