Abstract: SamuelSchaeffler is an important contemporary American ethicist.In response to Williams' objection that consequentialism destroys human being's integrity,he puts forward a mixed theory of agent-centered restriction and agent-centered privilege.The first half of this theory emphasizes that the agent is restricted by deontology,so that he cannot do what consequentialism requires for the sake of maximizing the consequences;the second half thinks that people can seek the best consequence of actions,but they should not apply the principle to all behaviors.At the same time,the agent has his own prerogative,that is to say,he can spare no effort to defend himself for his own pursuit of interests.Although both aspects of Schaeffler's mixed theory have been criticized,it may be a beneficial improvement for the consequentialism.

Key words: agent-centered restrictions, agent-centered prerogative, consequentialism, mixed theory, Schaeffler