During the simulation process of real-time three-dimensional scene, the popular modeling software and the real-time
rendering platform are not compatible. The common solution is to create three-dimensional scene model by using
modeling software and then transform the format supported by rendering platform. This paper takes digital campus scene
simulation as an example, analyzes and solves the problems of surface loss; texture distortion and loss; model flicker and
so on during the transformation from 3Ds Max to MultiGen Creator. Besides, it proposes the optimization strategy of
model which is transformed. The operation results show that this strategy is a good solution to all kinds of problems
existing in transformation and it can speed up the rendering speed of the model.