Abstract: Risks of modernity have a lot to do with the reflexivity of knowledge. The mutual construction of modernity and knowledge means that it must rely on reasonable knowledge strategy to introspect and resolve the risks of modernity. Any declaration of absolute truth and ultimate knowledge can only intensify the risks. We must acknowledge the bounded rationality of knowledge, and explore the fusion of natural science, social science and liberal arts in practice, so as to realize the critique and self-criticism of knowledge and value.