Back propagation algorithm of a multiplayer feed forward neural network, BP algorithm, was used.  The evaluation indexes system for talent environment in Shanxi Province is designed.  The neural network model for showing the relation between talent environment and economic development is constructed by MAT LAB.  The relationship between the talent environment indexes and per GDP is mapped.  It is seen that this neural network can be used to forecast the situation of economic development according to talent environment indexes in Shaanxi Province.