Unmanned aerial vehicle undercarriage

An unmanned aerial vehicle undercarriage relates to the technical field of unmanned aerial vehicle undercarriages and comprises an unmanned aerial vehicle undercarriage body, the unmanned aerial vehicle undercarriage body is provided with four supporting rods, landing buffer devices are arranged on the four supporting rods of the unmanned aerial vehicle undercarriage body, and each landing buffer device comprises a buffer column assembly and a buffer wheel assembly. Buffer column mounting grooves and buffer wheel connecting channels are formed in the bottoms of the supporting rods, the buffer wheel connecting channels communicate with the buffer column mounting grooves, and the buffer column assemblies are mounted in the buffer column mounting grooves and used for reducing impact force in the vertical direction when the unmanned aerial vehicle lands. The buffer wheel assembly penetrates through the buffer column installation groove to be connected and installed at the bottom of the buffer column assembly and