Abstract: Lenin proposed a "circle theory" about the development of European philosophy. Feng Qi deeply grasped Lenin's ideas from the perspectives of theoretical essence, epistemological roots, universal significance, historical basis, "ancient" and "present" dialectics, and creatively applied it to the study of the history of Chinese philosophy, accurately dividing the "circle" of the development of ancient Chinese and modern philosophy. Feng Qi does not use Lenin's "circle theory" as a model to subjectively enshrine Chinese philosophy, but strives to grasp the contradictory movement of Chinese philosophy. He saw not only the common nature of Chinese philosophy and modern European philosophy, but also the particularity of Chinese philosophy. He viewed all kinds of philosophical thoughts in Chinese history objectively and fairly, and revealed the conditions for achieving a breakthrough in philosophical theory and the problems that still need to be solved in Chinese Marxist philosophy. Feng Qi used Lenin's "circle theory" to study the history of Chinese philosophy, not only to verify the universal principles contained in Lenin's "circle theory" but also to demonstrate his own philosophical system.