Anti-collision unmanned aerial vehicle

The anti-collision unmanned aerial vehicle comprises an unmanned aerial vehicle body, connecting frames are fixedly connected to the outer portions of four wings of the unmanned aerial vehicle body, and anti-collision rings are installed at the tops of the connecting frames. According to the device, the anti-collision ring is arranged to protect blades of the unmanned aerial vehicle, namely the core part of a wing, and meanwhile the anti-collision ring further comprises an annular air bag, an elastic air bag, a first liquid bag, a second liquid bag, a buffering air bag and the like; after a first liquid bag and a second liquid bag are impacted, hydraulic oil is extruded outwards, enters a sliding pipe and pushes a piston rod and a rack to transversely move, so that a gear is pushed to rotate, the specific air spraying position of an air spraying opening is adjusted, and the air outlet position can face an impact point; in this way, the direction of the counter-acting force applied to the unmanned aerial vehic