Through the analysis to these questions the rational boundary of ntms can be better understand . the conclusions are that the rationality of ntms has a lot to do with its goal . the practices of e 结论是:实施非关税措施的目的与其合理性边界有很大关系，而执法者对这些措施的具体适用又会对其是否会转化为贸易壁垒产生重大影响
