The invention discloses a medical unmanned aerial vehicle which comprises a vehicle. A propeller device is arranged on the vehicle and comprises a spindle, an adjusting shaft and blades, the spindle is rotationally arranged on the vehicle and is of a hollow structure, the adjusting shaft is nested in the spindle, guide grooves are axially formed in the inner side wall of the spindle, guide stripswhich are matched with the guide grooves and can slide are axially arranged on the outer side wall of the adjusting shaft, three blade connecting rods are uniformly distributed on the outer side wallof the spindle, each blade is rotationally connected onto the corresponding blade connecting rod, and three fulcrum bars are uniformly distributed on the outer side wall of the adjusting shaft. The medical unmanned aerial vehicle has the advantages that an adjusting handle can be driven by a first cylinder to drive the adjusting shaft at an axial position, accordingly, second adjusting rods can bedriven to adjust inclination angles of the blades, adjusting functions can be conveniently and quickly used, and the medical unmanned aerial vehicle is simple in structure, high in reliability and long in service life.