Unmanned aerial vehicle system with obstacle avoidance function

The invention belongs to the field of unmanned aerial vehicles, and provides an unmanned aerial vehicle system with an obstacle avoidance function, which has the advantages of simple structure, high obstacle detection precision, long detection distance, strong light interference resistance, light weight, high operation reliability, low manufacturing and maintenance cost and the like. The system comprises a flight control part and a scanning imaging obstacle avoidance part, the scanning imaging obstacle avoidance part is internally provided with a horizontal scanning part, a top scanning part and a bottom scanning part, the horizontal scanning part carries out obstacle detection on the horizontal flight circumferential direction, and the top scanning part turns part of detection light beams of the horizontal scanning part to the position above the unmanned aerial vehicle for top obstacle detection; the bottom scanning piece steers part of the detection light beams of the horizontal scanning piece to the positi