The invention discloses a wheel and leg recombination mobile robot capable of flying repeatedly. The robot comprises a main cabin body, a wheel and leg recombination mobile mechanism, a propulsion system, a measuring and controlling device and a load, wherein the main cabin body serves as a main force-bearing structure of the robot and provides mounting interfaces for the wheel and leg recombination mobile mechanism, the propulsion system, a guidance navigation and control system, a power supply, the measuring and controlling device and the load; the wheel and leg recombination mobile mechanism serves as the mobile device of the robot and is mounted on the main cabin body; and the propulsion system is mounted on the main cabin body in a manner that a main thruster is mounted in the centerand auxiliary thrusters are symmetrically mounted on the edge.The wheel and leg recombination mobile robot can realize movement on the surface of an unstructured terrain in the wheel and leg linkage manner, wheel manner or foot manner, can carry out air injection for low-altitude flight, overcomes the limitation of the pure wheel type or foot type robot on the moving capacity and realizes all-terrain passing of the complex terrain on the surface of a planet.