人權理念隨著時代變遷不斷有新的內涵注入。俞正燮生於清、嘉道年間，即富有深刻的人權思想，可謂中國人權民主思想的啟蒙。然對人的基本權利－人性尊嚴，特別重視。若基本權的人格權，其核心意義應指「人的自我實現」，包括「自我開展」與「自我決定」的話，那麼，「人性尊嚴」所揭示的價值理念，應是：人必須被待之以人，待之以一種有同等價值的人，不能被待之如動物，甚至物化。以此審視俞正燮的人權平等思想，可知其所謂的平等，就在其強調對人性尊嚴的重視。所以其主“禮本人情”，此情是一情實之謂。其對社會各方面，見其不平等的虐待，必跳出來為他（她）們緣情說理，伸張一公理、一正義。然究竟俞正燮為社會哪些階層人物，伸張公理與正義？其如何彰顯“人權平等思想”？關於此論題，皆是本論文所欲探究的。

New connotations keep enriching the concept of human right as time changes. Yu Zheng-xie, who was born in the era of Jia-dao of Ching Dysnaty, held strong belief of human rights. He especially looked highly on the basic human right and dignity. Just if the core meaning of the basic human right indicated ”the self-fulfillment of human,” which includes ”self expansion” and ”self decision,” then, the value of ”human dignity” should be that a human needs to be treated as a human, as a equal-valued human being, instead of being treated as an animal or even being materialized. Hence, it is obvious that Yu Zheng-xie's thought of equal human right means the thought of human dignity. Therefore, he said ”the propriety lies in the humanity.” In various social aspects, Yu always came out against any unequal mistreatment, claiming those mistreated people's social rights and justice. However, whom on earth did Yu promoted the social rights and justice for? and how did he manifest the thought of the equal human right? I will investigate these questions in my dissertation.