The invention discloses a water-air amphibious unmanned aerial vehicle. The water-air amphibious unmanned aerial vehicle comprises an unmanned aerial vehicle body, a detachable
landing gear, an
aerial video device, a main controller, a
wireless communication module, a navigation module, a flight
control system and power systems. The unmanned aerial vehicle body is composed of a
fuselage, detachable wings and an empennage. Each power
system comprises a
lithium battery, a motor, a detachable
propeller and jet pump thrusters. The flight
control system comprises a lifting steering engine, a direction steering engine and a navigation sensor. The detachable
landing gear is a buffering undercarriage or a float. The
aerial video device comprises a high-definition camera and a data storage module. According to the water-air amphibious unmanned aerial vehicle, the two power systems, the detachable wings, the
propeller and the float are adopted, rapid switching of an aerial cruising mode and an
underwater cruising mode can be achieved, and a user can select a power
assembly to conduct assembling according to a cruising task. The water-air amphibious unmanned aerial vehicle has the characteristics of being portable, capable of being disassembled and assembled quickly, abundant in function, stable and reliable in performance, capable of achieving quick switch of water and air dual-purpose
modes and the like, and wide in application.