The continuous development of BIM and AI has made the analysis of building industrialization a hot spot in research and made the issue of industrial reform the focus of computer and construction research. The traditional architectural planning method cannot solve the problem of building industrialization reform under AI technology, and the accuracy of architectural planning is low. Therefore, this paper proposes a model based on BIM and AI technology to analyze the development mode and planning of building reform. First, BIM and AI technology are used to analyze the building data, and the irrelevant construction industrialization data is deleted according to the development mode and planning of the data characteristics. Then, according to the judgment results of construction data, compared with the traditional architectural planning method, the content of different construction industries is deeply excavated, and the influencing factors with higher possibilities are output. After simulation test and analysis, BIM and AI technology can improve the judgment accuracy, integrity, and rationality of the influencing factors of building industrialization planning, with an accuracy rate of 96.4%, and make the correct choice of development mode to meet the judgment needs of influencing factors of architectural planning.