In recent years, with the adjustment of export structure,the export volume of Chinese high-tech products increases rapidly. The export competitiveness of high-tech products has been the focus of domestic and foreign scholars" research. Based on the vector autoregressive method, this study investigated the relationship between the main factors of high technology products’export and competitiveness using the variable stationary and co-integration test, granger causality test, impulse response function and variance decomposition analysis from 1985 to 2013. Results show that there is a long-term and stable co-integration relationship between R D investment, human capital, technological innovation, foreign direct investment and competitiveness.SR D investment and human capital can significantly enhance the competitiveness of high-tech products long time. The positive effect of human capital has a long time lag. Technological innovation and foreign direct investment playSaSsmallSroleSin enhancing the competitiveness of high-tech products. So increasing R D investment, accelerating technological innovation and improving the ability of independent innovation are effective ways to enhance the export competitiveness of high-tech products.