Stair climbing machine

The utility model provides a stair climbing machine. The stair climbing machine comprises a machine base, wherein rollers are arranged at the bottom of the machine base, and a driving device is arranged on each roller; a driving chain wheel and a driven chain wheel are arranged on each of the two sides of the machine base, a chain is arranged between each driving chain wheel and the corresponding driven chain wheel, and a climbing driving device is arranged on each driving chain wheel; a connecting rod is fixed on each chain, a climbing frame is arranged on each connecting rod, each climbing frame comprises a cross beam, a front supporting leg bending downwards from the front end of the corresponding cross beam and a rear supporting leg bending downwards from the rear end of the corresponding cross beam, and the heights of the rear supporting legs are greater than those of the front supporting legs. Materials can be transported in stair wells by utilizing the structure of the stair climbing machine, and the transportation of the materials is high in safety and reliability.