Based on 2004—2011 statistics of Jiangxi Province, The relationship between science and technology (S & T) input and industrial economic growth is analyzed by applying improved gray correlation analysis. The results show that there is a positive correlativity between R＆D investment, S & T personnel input and the economic growth of Jiangxi, and the R＆D investment is more important to the economic growth of Jiangxi. In terms of the S & T input of three executive departments, S & T personnel in colleges and universities have the biggest impact on the primary and tertiary industrial economic growth, R & D funds in colleges and universities make the most of efficiency for the secondary Industry. According to the above conclusions, some suggestions for future S & T input of Jiangxi are put forward.