Abstract: According to the existing delay problems in the traditional 3D modeling process, a 3D modeling process optimization method based on the idea of process optimization was proposed. The method optimized modeling process mainly from structure optimization and model optimization. In the meantime, in order to overcome the more time-consuming problem in the process of respectively simplified model and the longer time interval problem between models, a new hierarchical model simplification algorithm was also presented, it made simplification algorithm throughout the area modeling process, which greatly reduces to 1/3 time interval between the model optimization. Finally, the superiority of the proposed 3D Modeling Process Optimization Method was verified by means of joint station system