《左传》是研究先秦历史很有价值的文献。《左传》记载了当时王室婚姻的基本状况。在春秋时期的王室婚姻中,普遍存在通过一夫多妻的形式实现政治联姻的现象,女性完全处于从属地位。除了一般的王室联姻外,当时的政治联姻还存在“蒸报”婚制和“媵妾”婚制,以此保障男女双方家族的利益。春秋时期的政治联姻还普遍存在“同姓不婚”的原则,以此使异姓诸侯国间实现紧密的政治联盟。 “Zuo Zhuan” is a valuable literature for studying the history of the pre-Qin period. “Zuo Zhuan” records the basic conditions of royal marriage at the time. In the royal marriage in the Spring and Autumn Period, there was a widespread phenomenon of political union through polygamy. Women were completely subordinate. In addition to the general marriage of the royal family, the political marriage at the time still existed in the “steaming” and “concubine” marriage systems in order to protect the interests of both men and women. The political marriage in the Spring and Autumn Period also prevailed with the principle of “not having the same surname,” so that the close political alliance between the different surnames and vassals could be realized.