Breathing device based on surrounding rock deformation monitor

The utility model relates to a breathing device based on a surrounding rock deformation monitor, and belongs to the technical field of surrounding rock monitoring equipment. The breathing device is installed at a vent hole of the surrounding rock deformation monitor and comprises a dustproof mechanism, a connecting mechanism and a breathing mechanism which are connected in sequence, the dustproof mechanism comprises a polyurethane filter screen, the connecting mechanism is a 304 connecting pipe, the breathing mechanism is a silica gel breathing bag, the polyurethane filter screen is connected to the lower end of the 304 connecting pipe, and the connecting mechanism is connected to the lower end of the silica gel breathing bag. The silica gel breathing bag is fixed to the top end of the 304 connecting pipe, and the polyurethane filter screen is connected with an opening of a vent hole in the surrounding rock deformation monitor shell in a sealed mode. According to the breathing device, the breathing bag with t