The change of hundred schools of thought was guiding the social change in China more than two thousand years ago, and it is the embodiment of the spirit of the times that feudal lord system was replaced with centralized bureaucracy. Drawing on the general spirit and methodology of hundred schools of thought is a necessary part of modern ideological change. Referencing does not mean complete inheritance. In modern times, social contradictions have undergone qualitative changes and the centralized bureaucracy has lost its advanced nature and rationality and become the object of modern social and ideological changes. Therefore, it cannot be one-sided. While drawing on its general spirit of change and methodology, the content of its argumentation and maintenance of centralized bureaucracy should be criticized. At the same time, the colonial consciousness formed in the last years of the Qing Dynasty and its derived "total Westernization" ideological trend of advocating Western capitalism should also be analyzed, criticized and cleared, and the modern ideological system with Chinese workers as the main body should be truly established and dominated. Social change in modern China.