Abstract: The European debt crisis is essentially a crisis of welfare rights. There is a close relationship among welfare rights， social security rights and human dignity in that the original purpose of welfare rights was to protect human dignity in the form of social relief systems. The autonomous connotation of human dignity also determines the boundaries of welfare rights， which entails taking human dignity as the bottom line of welfare rights. Moreover， human dignity can serve as a tool to expand the rights of social security and helps to propose a new expansion explanation program of social security rights based on the human dignity clauses in Chinas Constitution. The program takes “possibility concept”as the core and covers “degree possibility”， “scope possibility” and “storage possibility”.

Key words: welfare right, social security right, human dignity, constitutional text