Abstract: In recent years,as the purchasing price of tobacco leaf is irrational,Chinese peasants are not positive to plant tobacco leaf,it greatly influences the development of to bacco leaf production in China. For a long time,the pur chasing price of tobacco leaf was established according to the proportion between the price of to bacco leaf and commissariat.But this method has its own limitation,it can not spur the peasants to plant tobacco leaf.Taking the reality of tobacco leaf production into consideration,this paper combines the data envelopment analysis(DEA),regression and game theory together.This method is based on the income comparison between tobacco leaf and commissariat,so the purchasing price can effectively spur peasants to plant tobacco leaf.At last,we offer an example.

Key words: purchasing price of tobacco leaf, data envelopment analysis(DEA), game theory