《礼记·三年问》是丧服学史上被不断诠释的重要文献。笔者试图从诠释这篇文献出发,阐述丧服学的基本原理,特别是文与质的关系。笔者认为,《三年问》中的“称情立文”是就父母终身之丧而制定丧服节文,父母本服即三年,并非如历代学者认为的,是由期服加隆为三年。三年加隆仅仅是月数的算法,而不是尊尊和亲亲之间的关系。父母为至亲,即为至尊,而并不是期为亲亲之服,加隆为尊尊之服。由此才可以理解,三年之丧是人道至文,并不是因为它有过多的文饰,而恰恰是因为它最好地表达了近乎终身之丧的哀情。 “Book of Rites three years asked” is an important document in the history of mourning clothes is constantly being interpreted. The author attempts to interpret this article starting from the basic principles of mourning clothes, especially the relationship between the quality and the text. In my opinion, the “Li Li Wen” in “Three Years of Questioning” is to formulate the mourning clothes for the funeral of the parents’ lifelong loss. The three years of the service of the parents are not the same as the scholars of previous generations, For three years. For three years, Garonn only is the algorithm for months, not the relationship between respect and kiss. Parents as pro, that is Supreme, but not for the kiss of service, Garonne is respect for the service. Only then can it be understood that the three-year funeral is humane and not because it has too many literary and artistic creations, but precisely because it best expresses the mourning which is almost lifelong.