Building construction safety monitoring system and monitoring method thereof

The invention relates to the technical field of building construction safety, in particular to a building construction safety monitoring system which comprises a control system, a dust concentration detector, a monitoring unit and a dust falling unit, the dust concentration detector is arranged in an area where a construction site is located and used for monitoring the dust concentration in air in real time and transmitting monitoring data to the control system; the monitoring unit is arranged in a construction site and is used for monitoring personnel entering and exiting the construction site and the construction progress; the dust falling unit is movably arranged in the area where the construction site is located, and the control system is used for controlling dust absorption and dust falling in the air. According to the invention, the monitoring camera body can be effectively protected, the service life is prolonged, and dust cleaning can be automatically carried out on the protection mechanism outside th