Abstract: Combining with the status quo and development trend of the Xiangxi tea industry,through the analysis on the naturual,social and economic environment of Xiangxi,and using the least squares method to establish multiple linear model to carry on the quantitative research,we establish a model which reflect the positive correlation of the tea production with the first industry in GDP,and thus point out five factors which influence the tea industry in Xiangxi.Accordingly，the effective circulation of resources in the tea industry chain can be realized to improve the tea industry level，to promote the economic development,and ultimately,to accomplish the aims of poverty alleviation in Wuling mountainous areas.

Key words: Xiangxi region, tea industry, least square method, quantitative analysis, regression model