Dustproof laser ranging device

The invention relates to the technical field of mine roadway surrounding rock deformation monitoring, in particular to a mine dustproof laser ranging device. The invention aims to provide a dustproof laser distance measuring device which is more accurate in distance measuring result, higher in efficiency and capable of overcoming dust influence in a high-dust environment, the dustproof laser distance measuring device specifically comprises a laser distance measuring module, a dustproof module, a shell and a light reflecting module, the shell is provided with a window, the light reflecting module comprises a light reflecting plate, and the light reflecting plate is arranged in the window. The laser ranging module comprises a laser emitter, an information processing assembly and a ranging lens, laser emitted by the laser emitter is projected to the reflector after passing through the ranging lens and the window, and the laser reflected by the reflector enters the information processing assembly through the wind