Abstract: A device and a method for accurately mapping the building information modeling and the Internet of Things monitoring item based on building information modeling and building intellectual management, the device comprises: a key field identification module for screening an component ID code with entity monitoring data feedback from any building information modeling component with component ID code; an addressing module, which is based on an API interface of building intelligent subsystem, to obtain the IP address of terminal equipment Internet of Things equipment and the dynamic monitoring information of the equipment; an Internet of Things analysis module which is used for accurately analyzing the Internet of Things equipment communication signal; a rule mapping module which is used for generating a building information modeling and building entity equipment mapping rule to achieve accurate mapping.