公主虽然贵为天之骄女,婚姻依然没有自主权,她们往往被统治者当成政治筹码,婚姻多与政治利益挂钩,驸马选择范围自然也随政局变化而发生转变。以唐太宗和唐中宗两朝为例,驸马选取标准发生了三个变化:一是功勋之后逐渐丧失优势,退出驸马行列;二是外戚集团势力不断强大,成为公主婚配的优先选择对象;三是关陇士族的地位得到提高,山东士族仍然得不到重视。这些变化与两朝政治局势息息相关。但是,为了政治利益而结合的尚主联姻,也有一些隐患:作为婚姻主体的一方公主本身意愿得不到重视,导致婚姻的不幸福;作为婚姻主体的另一方驸马,自觉或不自觉地陷入政治漩涡中,沦为政治斗争中的牺牲品。 Although the princess is a proud aristocrat, the marriage still has no autonomy. They are often ruled by the rulers as political bargaining chips. The marriage is mostly linked to the political interests. The choice of cadets naturally changes with political changes. Taking the Taizong and Tang dynasties as examples, there are three changes in the selection criteria for geese: one is that they gradually lose their advantage after meritorious service, and exit the ranks of gens; the other is that the groups of gentility are constantly becoming powerful and become the preferred targets for the marriage of the princess; The status of the Long Clan has been raised, and the Shandong clan still can not get the attention. These changes are closely related to the political situation in both dynasties. However, there are also some hidden dangers associated with the main marriage of the political interests: one side of the main body of the princess as the main body of the princess will not receive the attention of her own will, resulting in the unhappiness of marriage; the other side, as the main body of marriage, is consciously or unconsciously caught in politics Whirlpool, became the victim of political struggles.