The invention provides a spiral elevator based on a planet roller screw, and belongs to the technical field of spiral elevators. The spiral elevator based on the planet roller screw comprises a box body, a worm wheel and worm mechanism, a planet roller screw mechanism, a cylindrical roller thrust bearing, an oil scraping plate, a bearing end cover, related connecting pieces and the like. The planet roller screw mechanism is formed by a screw rod, a pin roller, a nut, an inner gear ring, a holder and a holder pressing plate; the nut and a worm wheel structure are integrated; and the oil scraping plate and the screw rod are in sliding fit, so that the sealing performance of the spiral elevator is ensured. During work, a worm shaft transmits the motor output torque to a worm wheel and the nutso as to drive the pin roller to move planetarily without axial displacement, so that the screw rod further lifts up and lowers down. According to the spiral elevator based on the planet roller screwprovided by the invention, a core transmission part is a planet roller screw structure with multiple screw-thread contact points, so that a rated dynamic load and a rated static load are greatly improved, and the spiral elevator based on the planet roller screw has the advantages of high shock resistance, stability in transmission, high carrying capacity, high transmission accuracy, high transmission efficiency, long service life and the like.