Abstract: Utilizing capitalist culture to build socialism is one of the basic issues of Scientific Socialism explored by Marx and Engels. They put forward a historical problem of how to make the transition to socialism in underdeveloped countries. Lenin interpreted the actual problem in detail. CCP combined the basic principles of Marxism-Leninism with China's reality to make a progress theoretically and practically, denying Westernization and Seclusion Policy, which provided the theoretical basis and historical experiment for building socialism thought Reform and Opening Policy in new era.