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In the modern era, the demand of 3D campus model is increasing. In this paper, a fast modeling method is developed by using limited resources for 3D campus. The study combined 3D modeling technology with Unity3D platform, using limited resources, such as maps on the web and photos taken by students without the field measurement data. On the basis of this research, the campus model can be created quickly and conveniently, and this method is also very suitable for 3D modeling of an urban area. Moreover, the study realized a campus roaming and basic interactive functions. This research is based on Unity3D platform.