This paper introduces academic thoughts and clinical experience of Xu Songnian, a famous modern clinical Traditional Chinese Medicine (TCM) doctor in Shanghai. He studied medical knowledge under Ding Jiwan's guidance. Dr. Ding Jiwan was the descendant of the Zhang Family Internal Medicine. After accumulating clinical experience for a decade, Xu Songnian had concluded unique insights in the treatment of miscellaneous diseases. Dr. Xu put his concentration on the development of renal disease treatment in middle age and gradually formed a set of theoretical system in clinical experience, which made great contribution to the later TCM renal disease development. This paper will give restricted understanding of Dr. Xu's academic thoughts and make a brief introduction of it.