From the modernization practice of the developing world in the contemporary world, one can draw an empirical conclusion: the per capita GDP of a country from 300 dollars to 4000 dollars is a period of severe social shock. During this period, the contradiction between traditional society and modern society The outbreak of concentration will complete a complete renewal of the entire social structure. In fact, even developed countries in Europe and the United States have experienced similar periods. From this we know. ['GDP per capita below 300 USD is a sign of developing countries.', 'GDP per capita higher than $ 4,000 is a sign of developed countries.', 'Many developing countries have experienced severe social shocks during their modernization process.', 'Developing countries began to industrialize and modernize under a completely different external environment than developed countries.']