The invention discloses a safety monitoring system of a load-bearing bracket project. The system comprises the following steps that: complexity levels are divided according to the design requirementsof the load-bearing bracket project and various factors in climatic conditions; the risk level of the load-bearing bracket project is comprehensively determined according to the complexity levels of the factors; and monitoring of a corresponding level is performed on the whole construction process of the load-bearing bracket project according to the risk level of the load-bearing bracket project.According to the safety monitoring system of the load-bearing bracket project of the invention, risk level division is performed on the load-bearing bracket project according to the complexity levelsof the influence factors; monitoring methods for each construction process are put forward according to each risk level; specific requirements for monitoring personnel, monitoring content and monitoring frequencies are imposed on the whole construction process of the load-bearing bracket project; and therefore, the whole construction process of the load-bearing bracket project can be comprehensively monitored, safety hazards can be prevented, and safety accidents can be effectively prevented.