“半”是一个比较特殊的数词，学术界对其关注和研究甚少。本文从语法、语用、语义、语源及文化入手进行多方位多层次的考察，试图对“半”作一次文化语言学的再认识。全文分为两半，前一半从语言角度探究，着重对“半”的词性问题提出研讨；后一半从文化视野观察，涉及古今“半”文化的一些有趣现象。 “Half” is a rather special nouns, academics pay little attention and research. This thesis starts from the grammar, pragmatics, semantics, etymology and culture to conduct a multi-faceted and multi-level study to try to make a re-understanding of semi-cultural linguistics. The full text is divided into two parts. The first half explores from a linguistic point of view and focuses on the discussion of the part-of-speech problem. The latter half views some interesting phenomena from the cultural perspective of ancient and modern times.