The marriage law is the sum of the legal norms regulating the marriage relationship in a certain society, and is the concentrated expression of the marriage system in a certain society in law. Its contents mainly include the establishment and dissolution of marriage, the effectiveness of marriage, especially the rights and obligations between husband and wife. From the nature of the object of adjustment, the marriage law includes not only the personal relationship caused by marriage, but also the marital property relationship caused by it. Marriage lawyer refers to a lawyer whose main business is to handle legal services related to marriage.