中国古代的皇族谱牒,一般称之为“玉牒”。但“玉牒”一词,又有多种词义。就其指皇族谱牒而论,也有广义和狭义之分。广义上是指整体上的皇族谱牒,而狭义上则仅指皇族谱牒中的一种。因而,在阅读和研究古代典籍时,就不能将所有资料中的玉牒与皇族谱牒完全等同起来。它们之间既有区别又有联系,须作具体分析。尤其是宋代的皇族谱牒,由于立国较久,就难免前后有变;又 In ancient China, the spectrum of royalty was generally called “jade”. But “jade”, there are a variety of meaning. As far as its royal family spectrum is concerned, there are also broad and narrow points. In a broad sense, it refers to the whole royal spectrum, while in the narrow sense, it refers only to one of the royal spectrum. Therefore, when reading and studying ancient books, you can not completely equate all jades with royal records. There are both distinctions and links between them, which must be analyzed in detail. In particular, the Song Dynasty royal clan, due to the establishment of the country for a long time, it is inevitable before and after change;