Abstract: Many homogeneous tourism destinations in a region are usually oriented to a main tourist market, and the similarity of resources and location differences will inevitably lead to the shift of attractiveness. Through investigation, it is found that Guangzhou residents follow the patterns of decision- making for visiting 25 national forest parks in Guangdong Province: Accessibility, based on objective distance, is a comprehensive indicator of travel time and effort, and is proportional to tourist income. Perception is closely related to the level and popularity of scenic spots, and can be improved by special natural types and cultural history. The geographical relationship between tourists and destinations will increase the perception. Here the PRED matrix is used to integrate accessibility and perception, and the market structure of forest parks in Guangdong Province is divided based on the Guangzhou City as the source of tourists: The little Pearl River Delta has become the preferred area for travel, occupying a large share of the market; the large Pearl River Delta and the south region of North Guangdong Province is the alternative travel area, and tourist flow spreads to some high-level, especially the high-function forest parks by a point axis model; the two wings of western and eastern Guangdong Province are not selected usually by the residents, and the target market for it should be mainly in the surrounding counties.