Robot capable of climbing steps with any rotation angle and any step surface and climbing method thereof

The invention provides a robot capable of climbing steps with any rotation angle and any step surface and a climbing method thereof. The robot comprises an outer four-leg supporting structure and an inner four-leg supporting structure and is characterized in that a first laser ranging sensor and a second laser ranging sensor are arranged on the front sides of two outer legs in the front of a first supporting plate respectively, a third laser ranging sensor and a fourth laser ranging sensor are arranged on the front sides of two inner legs in the front of a second supporting plate respectively, bases are arranged at the lower ends of four outer legs and four inner legs, and collision sensors are arranged on the lower sides of the bases. By using the laser ranging sensors in combination with the designed control method, an ingenious rotation stair climbing path plan is provided, and therefore the robot can climb steps with any rotation angle or steps of any type, wherein the rotation angles of the steps are different.