关键词： 区域梯度, 空间结构, 梯度指数, 红色旅游区

Abstract: Gradient index is an important index to reflect the regional development.It exists the imbalance of regional development,unreasonable product structure,loose tourism-line organization of red tourism industry,these problems restrict the further optimization of red-tourism industry structure.Gradient index model can calculate the level of red-tourism industry.By constructing central position of red-tourism centers,forming spanned classic red-lines and planning red-tourism industrical extensive areas can resolve red-tourism industrical structure and organization.The government plays a key role in the development of red-tourism industry.

Key words: regional graded, spatial structure, graded index, red-tourism area