The invention discloses a goaf safety monitoring device and monitoring method based on the Beidou satellite, comprising an L-shaped plate, a vertical rod fixedly connected to the top of the L-shaped plate, and a control device fixedly installed on the outer side of the vertical rod. Box, the present invention is compact in structure, simple and convenient in operation, and strong in practicability. By setting up a safety monitoring camera that can be adjusted up and down, it is convenient to adjust and maintain it, and at the same time avoids the staff from climbing, which greatly reduces the safety. Hidden dangers, and by setting the snap-in mechanism, the security monitoring camera can be quickly disassembled and replaced, which greatly improves the efficiency of disassembly and replacement, and does not need to be screwed multiple times, thus avoiding the occurrence of slipping wires, which is extremely The service life of the equipment is greatly extended. In addition, by setting the rotation adjustment mechanism and the angle adjustment mechanism, the orientation angle and inclination angle of the security monitoring camera can be quickly adjusted, which is beneficial to practical use.