In the Papel the concept of underdeveloped area is defined．On this basis，the indexes are selected to describe the human resources flow and the local economic growth in the underdeveloped area．After deeply analyzing the mechanism of how human resources flow affects local economic growth in underdeveloped area，the paper proposed the corresponding hypotheses．The empirical test for these hypotheses is conducted by econometrical tools，from which the author discovers the main problems with the rational flow of human resources in underdeveloped area．Finally the paper gives some suggestions on how to promote the rational flow of human resources SO as to enhance the local economic growth in underdeveloped area．Thus the local marco—economic decision can be inspired by the proposals．