The invention discloses a roller type multistage damping reed pipe anti-falling device for an unmanned aerial vehicle. A three-level damping reed pipe telescopic structure is adopted, damping reed pipes are in a thin-shell cylinder shape, and magnetic rods and springs are installed in the damping reed pipes. The two damping reed pipes have unequal lengths, and the length of the short reed pipe is one-third that of the long reed pipe. The long reed pipe and the short reed pipe are connected to a hinge support of a fuselage base plate, and the tail end of the short reed pipe is connected to the side wall of a first stage of the long reed pipe. A universal wheel support is connected with the long reed pipe, a rubber wheel is installed below the support, and a pressure ball bearing rotates to achieve 360-degree rotation of the rubber wheel. When the rotor unmanned aerial vehicle lands, the anti-falling device delays ground contact time by compressing the springs to reduce impact force and converts kinetic energy into elastic potential energy, magnetic damping can alleviate vibration, and energy is dissipated. The universal wheel support is matched with the rubber wheel to prevent rollover caused by a horizontal speed, and the goal of protecting the unmanned aerial vehicle is achieved. The anti-falling device can also serve as an undercarriage to make the unmanned aerial vehicle capable of landing directly.