Up-down device with anti-skid function

The up-down device with the anti-skid function comprises a fixing frame and a plurality of pedals, an inclined supporting frame is arranged on the fixing frame, the inclined supporting frame comprises two inclined supporting rods and a plurality of bearing sets, the inclined supporting rods obliquely extend in the up-down direction, the two inclined supporting rods are oppositely arranged, the bearing sets are arranged between the two inclined supporting rods in an arrayed mode, and the pedals are arranged on the supporting sets. The bearing assembly comprises two bearing rods which are oppositely arranged, and the two ends of each bearing rod are connected with the corresponding inclined supporting rods correspondingly. The pedals and the bearing sets are arranged in a one-to-one correspondence mode, the pedals are arranged on the two bearing rods in the same bearing set at the same time, the pedals are fixedly connected with the bearing rods through metal wires, the metal wires are wound on the pedals and t