Lightweight high-endurance four-axis unmanned aerial vehicle

The utility model provides a lightweight high-endurance four-axis unmanned aerial vehicle, which relates to the technical field of unmanned aerial vehicles, and comprises two groups of annular fuselages and undercarriages, the annular fuselages are arranged in the vertical direction, vertical clapboards are arranged on the side surfaces between the adjacent annular fuselages, equipment cabins are arranged between the vertical clapboards and the inner walls of the annular fuselages, and central seats are arranged at the central positions of the annular fuselages; the end part of the central seat is connected with a central pipe, the end part of the central pipe is connected with a pipe seat fixed end, the end part of the pipe seat fixed end is in shaft connection with a pipe seat movable end, the end part of the pipe seat movable end is connected with a folding machine arm, and a cable main body is arranged in the pipe seat movable end and the pipe seat fixed end. And the undercarriage is arranged on the botto