Abstract: Institutional commitment refers to the formal promise given to the public by social organizations in the form of social structure,social operation,social institution,law and regulation.Institutional commitment provides a code for public conduct and regulates the general order of society.It is both objective and universal;it doesn't negate individual promise,instead,it needs to be supplemented by the promises and trust between individuals.It is the interaction of institutional commitment with its credibility and individual promise with its creadibility that constitutes the trust of modern society.The rationality of institutional commitment doesn't lie in the non-individuality of the subject of commitment but in the objectivity and universality of the commitment subject and in its freedom from inclination and contingency.Therefore,institutional commitment is of dignity and authority and can be trusted by members of society in the adjustment of their private and public conduct.

Key words: commitment, institutional commitment, abstract system, modern society