According to traditional philological materials such as Shuowen Jiezi and oracle bone inscriptions, the original meaning of the character 得 is “get”. This article takes the Book of Mencius as closed materials, exhaustively categorizing all entries of 得 in Mencius, totaling 114 examples. Then we analyze semantic content and grammatical features references to the four commentaries from Zhao Qi , Sun Shi, Zhu Xi, Jiao Xun. We find that all examples of 得 are used as verbs, but there are 12 examples where it is used as a delexical verb, exemplifies the gradual trend of semantic attenuation of 得. After conducting linguistic analysis of the character 得, we explore its manifestation of the philosophical ideas in Mencius, including aspects of personal cultivation, interpersonal relationships, and governance wisdom. Through the interaction of language and cultural analysis, we further deepen our study of the language theory and ancient classics culture.