Support in the legal sense can be divided into a broad sense and a narrow sense. Support in the broad sense generally refers to the right and obligation relationship between specific relatives that exists according to the explicit provisions of the law to provide for each other economically and provide mutual assistance in life, including the "support" of older relatives to younger relatives, the "support" of peer relatives and the "support" of younger relatives to older relatives Three specific forms. The narrow sense of support refers specifically to the rights and obligations of economic support and life support between peer relatives, especially between husband and wife.
 The Marriage Law of our country stipulates upbringing, maintenance and support respectively according to the relationship between different subjects, and its "maintenance" is in a narrow sense. However, in the Criminal Law, the Inheritance Law, the General Principles of Civil Law and other legal norms, "maintenance" is applicable, and its "maintenance" belongs to a broad sense. Based on this, in general, in legal research and law application, we should understand it in the broad sense of "maintenance", and in specific kinship, we may refer to it separately.