李道純的《中和集》丹道思想理論兼容並蓄，系統完整。其學以南宗為主，兼得北宗全真之意，為丹道學說的發展做出了重大貢獻。其思想特點主張性命雙全，特別強調「守中」是修丹的核心，故後人稱其為內丹學中的中派。本文主在介紹李道純的內丹思想理論，並從李氏的著作《中和集》入手，具體探討了李道純的丹道心性思想特色，從其中和、虛靜、性命、身心等學說中，期使學人對於李道純融合南北二宗的丹道中派學說能有一個較為全面的認識。

Li Dao-Chun learned that his theory of inclusive inner alchemy, the system is very complete. Li Dao-Chun also stressed the importance of Inner Nature and Bodily Life in the cultivation of Dao, arguing that one”s inner nature constituted the core of cultivation of Inner Alchemy. In the history of Daoism, Li Dao-Chun”s contribution also came from his viewpoints on the harmonious relation among the Three Schools, namely, Confucianism, Buddhism and Daoism, which constituted the core of traditional Chinese culture. Therefore, later generations called Inner Alchemy of the Daoist School Inner Nature. In this disertation, the author outlines Li Dao Chun”s life, his academic books and thoughts on Daoism. Li”s inner Alchemy theory is the focus of this disertation, especially the relationship between Inner Nature and Bodily Life in cultivation Inner Alchemy, Li”s ideas about way to inner harmoy, the special status of emptiness of human nature in cultivation of Dao, his viewpoints on the Three Schools and so on. In this discussion, the author provides us with a complete picture of Li Dao-Chun”s life and, more importantly, his special contribution to the development of the theory of Inner Alchemy in his life time.