未婚同居,是指未婚的男女,在未办理结婚登记手续,但是符合婚姻法规定的结婚的实质性要件情况下,于一定的期限公开居住在一起的事实状态。在法律上对这种社会现象如何调整是存在争议的,但从积极方面来考虑,在法律制度上应该对未婚同居给予多方面的建构。 Unmarried co-living refers to the fact that unmarried men and women openly live together for a certain period of time without completing the formalities of marriage registration but meeting the substantive requirements of marriage as stipulated in the Marriage Law. How to adjust this social phenomenon in the law is controversial, but on the positive side, the legal system should give a multi-pronged approach to unmarried cohabitation.