Fuente: Wipo "IOT" The invention relates to the technical field of BIM model and Iot equipment mapping, in particular to a graphic engine-based BIM model and Iot equipment automatic mapping method, which comprises the following steps of: preparing a two-dimensional CAD drawing and labeling an Iot equipment identifier and an Iot equipment size; and creating a three-dimensional BIM model according to the CAD drawing. And importing the CAD drawing and the three-dimensional BIM model into a graphic engine and carrying out data analysis. And converting the Iot device and the Iot device identifier corresponding to the single-layer two-dimensional CAD drawing into a three-dimensional BIM graphic element. And selecting the Iot equipment needing to be mapped, and correspondingly extracting data information of the selected Iot equipment. And carrying out space matching operation based on the selected Iot equipment. The problems of complex operation, low efficiency, high cost, low precision, difficulty in secondary updating and the like of an Iot equipment identifier mapping method at the present stage are solved.