The invention puts forward a curve reference division method based on a BIM (Building Information Modeling) technology. The method comprises the following steps that: S1: reading an engineering designresult model, according to the material characteristics of engineering construction and models, construction characteristics and attributes, carrying out expansion and management on the attribute ofa design model, and adding attribute information related to construction on the basis of the attribute information of the design model; S2: according to the characteristics of curve reference division, establishing constrain conditions including a split object, a reference line, a splitting starting point and the like, and generating one group of split surfaces, and carrying out a layered Booleanoperation with an engineering design result model to obtain one series of model units; and S3: according to the construction characteristics and parameters of the models, carrying out attribute configuration and expansion on the layered models, and obtaining the BIM model constructed by the layered model, and the attribute of the BIM model.