By analyzing the application points and the current situation of digital delivery in each stage of highway engineering construction, this study found that the lack of parameter management and definition in the modification and refinement process of building information modeling (BIM) source files at each stage led to difficulties in the splitting and refinement of BIM at each stage and even the need for reconstruction. To this end, a method for strengthening the overall planning of the whole life cycle was proposed. By clarifying the demand for model parameters according to the application points of each stage, a mechanism for parameter reservation and classification was developed. The parameters, including “overall description”, “local description”, “section description”, and “model element”, were proposed, and the use scenario and classification principle of each parameter were specified in detail, so as to address parameter redundancy and repeated definition caused by parameter reservation. The study shows that the method achieves a clear definition and orderly management of model creation parameters, improves the efficiency of model creation and modification and parameter use, and provides a solution for the parameterization of BIM application in the whole life cycle.