This article is mainly to discuss the development of 'Theory of Self Cultivation (Gong Fu) that was advocated by YANG QIYUAN. The development of his theoretical discussion was practically to discuss 'Human Nature Awareness (Zhi Xing )' from ' Mind Identification (Shi Xin)', and finally to realize the entire meaning of Benevolence Realization (Ti Ren)'. On the concrete annotation, it also based on the 'Comprehension of Absolute Integrity (Min Min De), of 'The Ultimate Wisdom (Da Xue) as its included aspiration power and developmental sequence of practical realization, and also adopted the theory of Yan Hui as its realization point. From its revealed contents about the 'Thought of Mind and Human Nature', it really can reveal its main subject of thought. In addition, it also can be observed about the development change of Yang Ming Mind Philosophy. And, it showed a different thought progressed ways of the 'Benevolence Realization (Ti Ren), and 'Desire Control (Zhi Yu) , in the later Ming Dynasty, as well as the phenomena of academical confrontations that was further resulted from the 'Subject Self-Cultivation ( Gong Fu ) View Differences' of mind philosophy internal parts.