Phlegm stasis correlation theory originated in the pre Qin Dynasty，developed in the Jin and Tang Dynasties，flourished in the Song and Yuan Dynasties，and deepened in the Ming and Qing Dynasties. It is formed based on the classical traditional Chinese medicine theory of phlegm and blood stasis and completed by various generations doctors. In this paper，the formation and development of the theory of phlegm and blood stasis，phlegm and blood physiological and pathological basis and clinical application were reviewed.