Stair climbing smart car and using method thereof

The invention relates to a stair climbing smart car and a using method thereof. The stair climbing smart car comprises a front wheel set and a back wheel set, side arm mechanisms located on both sides of a car body and used for supporting car crossing and climbing; the side arm mechanisms are used for propping up the right-angle portion formed by a pedal tread of a lower stair and a vertical face of an upper stair during the crossing and climbing process; and after being lifted along the vertical face of the upper stair to the pedal tread of the upper stair, the front wheels are turned to the pedal tread of the lower stair so that the back wheel set is pushed to the pedal tread of the upper stair from the pedal tread of the lower stair along the vertical face of the upper stair. The stair climbing smart car is reasonable in structure and can climb stairs quickly and steadily, jolts are reduced, the car is suitable for multiple stair structures, and the stability and intelligence of stair climbing cars are inc