方苞《礼记析疑》一书质疑《礼记》部分内容属刘歆增窜,尤其是“周公践阼”部分,旨在为王莽篡汉张本。对于方苞的质疑与论证,《四库全书总目提要》、《新学伪经考》、《刘向歆父子年谱》等诸家的处理,或流于表面,或处之漠然,或过于严苛,皆失公允。通过对《文王世子》、《明堂位》、《大传》、《杂记》、《祭统》等《礼记》篇目经文的重新整理,方苞力辨周公践阼之诬、武王梦帝与九龄之妄、成王幼弱之失实,并指出刘歆是以纬书解经的始作俑者,降服等增窜,也意在阿附王莽。 Fang Bao “Book of Rites analysis of doubt,” a book questioned “Book of Rites” part of the content of Liu Xinzeng channeling, especially “Zhou Gong practice 阼 ” section, aimed at usurping Wang Han Zhang Ben. For Fang Bao’s questioning and argumentation, the “Sikuquanshu Head Catalog”, “New School Sutra test”, “Liu Xiangxin father and son spectrum” and other various treatment, or on the surface, or indifference, or too harsh , Are unfair. Through the reorganization of the texts of The Book of Rites such as “Wen Wang Shi”, “Ming Tang Bian”, “Dazhuan”, “Miscellanies” and “Ji Tong” and other texts, Age of delirium, the weakness of the king, and pointed out that Liu Xin is the initiator of the interpretation of the book, surrender and other channels, also intended to annex Wang Mang.