We select important passages about the "distinction between righteousness and profit" from classic texts like Shi, Shou, Yi, Li, Chun Qiu, Zuo Zhuan, Gong Yang Zhuan, Lun Yu, Mencius and Da Xue, and then interpret meaning of the distinction succinctly. The etyma of "righteousness" and "profit" are found in etymological texts like Shuo Wen Jie Zi and Yu-cai Duan's Annotations. We also discuss the historical derivation of the "distinction between righteousness and profit" in Zhong-shu Dong's writing about "The Righteousness" and in Chong Wang's writing about "Sarcasm" in his On Balance. Furthermore, We analyze the meaning of the "distinction between rightenousness and profit" according to Xi Zhu's The Annotations of the Four Books as well as the arguments between Xi Zhu and Liang Chen about "the business of being a king or a ruler." With all the discussion mentioned above, we hope to bring this thesis into the field of historical philosophy, cultural philosophy and ontology.