Abstract:The three classes could be set for the studies on modernization in the last half of 20th century. The first was the modernization research in the 1950s-1960s appeared in the America, and the classical modernization theory was the main achievement. The second was the post-modern studies in the 1970s-1980s mainly in the developed countries, including the criticism and developing of the classical theory, and the emerging of the post-modernism and post-modernization theory. The third was the new modernization research in 1980s-1990s (to update) in the world. Some new theories have been pushed such as the ecological modernization, reflexive modernization and the second modernization theory.