Nowadays, how to effectively control the construction of high-rise buildings, so as to avoid accidents, ensure the personal safety of workers, and reduce property losses and social impact is a problem that cannot be ignored. AI (artificial intelligence) robot can replace manual to complete some dangerous operations, which can effectively reduce the occurrence of safety accidents. The function of the safety evaluation subsystem in the building construction safety monitoring and early warning system is to complete the safety evaluation and early warning level analysis of buildings, and carry out automatic data processing and safety evaluation after data entry; determine the control of hazard sources in order to achieve the purpose of hazard evaluation and early warning. After adopting this system, the number of accidents and deaths decreased. The building construction safety monitoring and early warning system based on AI technology in this paper is helpful for building construction safety management.