Tourism is a new growth point of national economy, information technology leads social development, the combination of the two not only has important social significance, but also has a huge commercial potential. Virtual reality technology application to digital tourism systems is based on actual tourism landscape, aiming to use virtual reality technology to simulate and create surreal scenes and build a three-dimensional virtual tourism environment. Without leaving home, virtual tourists can be in 3-D virtual environment to enjoy the scenic beauty thousands of miles away, images are clear, detailed and vivid. In this paper, digital tourism systems are analyzed, and the overall design, from the perspective of virtual reality technology application and travel information, is discussed to provide some technical solutions, and to promote the development of traditional tourism.