Mountainous area surveying and mapping unmanned aerial vehicle

The utility model discloses a mountain area surveying and mapping unmanned aerial vehicle which comprises an unmanned aerial vehicle main body, an undercarriage, a camera, a supporting arm, a motor, apaddle and two anti-collision mechanisms, the two anti-collision mechanisms are mounted on the outer sides of the supporting arm of the unmanned aerial vehicle, and the outer sides of the anti-collision mechanisms are protected through arc-shaped anti-collision rods; the anti-collision rods are connected with the supporting rods through the connecting rods, the supporting springs are arranged inthe supporting rods, when the peripheries of the anti-collision rods are impacted, the supporting springs are extruded through the connecting rods for buffering, the buffering effect is good, the anti-collision effect on the unmanned aerial vehicle is improved, and the situation that excessive forest trees are blocked in a complex mountain area and collide easily is avoided; and the unmanned aerial vehicle is easy to damag