This paper selects 9 indicators to build the economic development indicators of urban tourism in Gansu Province. We use the principal components analysis method to analyze the level of tourism economy development, with the help of ArcGIS and GeoDA software. And it reveals the regional tourism economic differences between 14 prefecture-level cities in Gansu Province. The result indicates that the level of tourism economic development shows features of general section in the geographical space, and it formed a "dumbbell" type space pattern. Then we analyze the main causes of this phenomenon, and find out solutions to solve the problem.