Viewing from the ethics and economy,the paper expounds the values of sustainable utilization of resources, analyzes two intrinsic contradictions (lack of po wer constraint in resources allocation between generations and “free ride”in input of sustainable utilization of resources)for executing the sustainable utilization of resources,and discusses the incentive mechanisms and ethics constraints of sustainable utilization of resources by the methods of theory of games and theory of social contract.There are two kinds of incentive mechanisms: explicit(e.g.incentive wage) and implicit (e.g.promotion).In distinct situations,we need different incentive mechanisms to execute sustainable utilization of resources.