Unmanned aerial vehicle slow descent launching device and line cutting mechanism thereof

The utility model discloses an unmanned aerial vehicle slow descent putting device and a line cutting mechanism thereof, the line cutting mechanism comprises two vertical and mutually opposite mounting plates, a linear optical axis, a cutting piece and a pushing piece, the linear optical axis, the cutting piece and the pushing piece are both arranged between the two mounting plates, the two ends of the linear optical axis are correspondingly fixed on the two mutually opposite sides of the two mounting plates, and the linear optical axis and the cutting piece are arranged on the linear optical axis. The cutting piece is connected to the linear optical shaft and can slide in the axial direction of the linear optical shaft, and the pushing piece is used for pushing the cutting piece to cut off a rope. According to the utility model, the cutting piece is arranged on the linear optical shaft and can move along the axial direction of the linear optical shaft, so that the cutting piece can stably move towards the ro