The right of existence in the Constitution and the living support to request right in Public Assistance Act ensure the right to minimum of subsistence. But the right of existence in the Constitution ensures individual right, Public Assistance Act ensures family. It is specifically feasible to discuss that the living support to request right in Public Assistance Act is enacted to care for the people of low incomes and help them to live on themselves in a moment. This paper studies regulations of Public Assistance primarily. Therefore the research project of this paper includes¡GThe living supports to request right, administrative organ¡¦s organization, the regulations of behavior do conform to legally the administrative requirement. Second, the administrative relief, the judicial relief and Legal Aids Act forming a complete set. Third, by the principle of equity examines regulations of Public Assistance, that whether it is to be suitable ¡§the substantive equality under law¡¨. To be brief, this paper anticipates constructing more rational regulations of poverty.