《孟子字义疏证》为清代学者戴震的重要义理著作,本书大量引用《孟子》中诸多概念作为字眼进行疏证,借此阐发自己的哲学思想,达到批判程朱理学的目的。但戴震对孟子思想的这种阐发并不能证明其思想与孟子哲学思想的一致性,而是存在着实质上的差异,这种认识对于精确而完整地把握戴震哲学思想具有重大学术意义。 “Mencius word meaning Shuzheng” is an important principle of Daizhen scholars in the Qing Dynasty, the book quoted a lot of “Mencius” in many concepts as a word to evacuate, in order to elucidate their own philosophical thinking, to achieve the purpose of critical Cheng Zhu Li. However, Dai Zhen’s elucidation of Mencius’s thought does not prove the consistency of his thought with that of Mencius, but there is a substantial difference. This kind of understanding is of great academic significance for the accurate and complete grasp of Dai Zhen’s philosophy.