一中国古代目录学的分类体系,从刘歆《七略》的六分法开始,渐渐演变为四部分类。这种演变有它自身的必然性。与《七略》六分法相比,四部分类更实用,易于编目也便于寻书。“在经史子集四部中,经部历代因袭,少有变化,史部专科性强,集部收诗文集也比 A classification system of Chinese ancient bibliography, starting from the six-point method of Liu Xin’s ”Seven Strategies“, gradually evolved into four categories. This evolution has its own inevitability. Compared with the ”Seven Strategies“ six-point method, the four categories are more practical, easy to catalog and easy to find a book. ”In the history of the four sub-set, the Department by the successive generations of attack, little change, the Department of the Department of the strong, collect the collection of poetry than