Travel service is an important industry in our country. Tourism resources are the material base on which travel service is dependent for development. The investigation of tourism resources is an urgent work at present. Remote sensing technology plays an important role in the investigation of tourism res- ourses, it can raise the speed of investigation, improve quality of investigation, and Provide important information for evaluation, plan, development, use and Protection of tourism resources. This paper illustrates specifically application of remote sensing to the investigation of tourism resources by exemples of remote sensing investigation of tourist resorts in Beijing, tourist scenic spots of Yuncheng in Shanxi, and Lishan tourist resort in Xian.