Both neo-classicism and structuralism fail to thoroughly interpret the difficulties among developing countries in the performance of economic growth since World WarⅡ. The practice of economic policies based on these theories is mostly a failure. It is believed by Lin Yifu that only when the industrial structure of developing countries complies with the structure of factor endowment can they conform to the comparative advantages and the economy is the most competitive. The indexes of technological choice are amended in this paper, in which“Lin Yifu’s proposition of economic growth”is verified based on the panel data of 95 developing countries. An inverted“U-shaped”relation exists in the economic growth rate and the indexes of technological choice of developing countries. In other words, an optimal industrial structure exists under the given factor endowment structure, which provides empirical evidence to the existence of “Lin Yifu’s proposition of economic growth”.