At present, edge computing is more and more widely used in the development process of various industries. With the stable development of social industrial structure, the development scale of enterprises is gradually expanding, the project production cycle is getting longer and longer, and the project information and project elements are also getting more and more. Under the traditional project management mode, the project elements are independent from each other, the participants are difficult to interact, and the information content is relatively dispersed, which has seriously hindered the improvement of the efficiency and level of enterprise project management. The emergence of intelligent the BIM (building information modeling) project management system provides technical support for the realization of the overall project management objectives, but there are still large limitations in actual use, mainly reflected in the poor flexibility of attraction and error prone. In order to solve the dilemma of enterprise project management, based on the analysis of the characteristics of project management and the functional requirements of the system, this article proposes an intelligent system of BIM in project management oriented to the internet of things. In order to verify the effectiveness of the system, this article conducts system tests from the aspects of project management efficiency, system security, and user experience. The results show that the average intelligent system error level of internet of things-oriented BIM in project management is about 0.310. It can be seen from this result that, on the basis of internet of things technology, various project elements and information within the system have achieved effective integration and promoted the deep intelligent development of project management.