Abstract: Passenger traffic is a “barometer” of tourism development, and plays an important role in reflecting tourist source structure and predicting the fluctuation risk of tourism. This paper attempts to analyze the development status of tourism in Zhejiang province by using the high frequency monitoring data of passenger car′s flow. The study shows that the analysis of passenger traffic data can reflect the development and spatial pattern of tourism in the whole province, so some regular problems can be extracted from it; the investigation of the characteristics of passenger source structure, including the time distribution, the organization form and the spatial distribution of the passenger sources, is beneficial to the discovery of business opportunities and the targeted expansion of the market, and the analysis of the changes in the characteristics of passenger source structure helps to foresee and avoid the fluctuation risk of tourism market.

Key words: passenger car′s flow, tourist source structure, fluctuation risk of tourism, development of tourism