PPMs是WTO有关贸易与环境问题的争论中最为棘手的问题之一,争论的焦点是基于PPMs而采取的贸易措施是否合法、正当。长久以来,似乎已经形成一种共识:WTO禁止基于PPMs而采取的贸易限制措施,即PPMs在WTO框架内不具有合法的地位。笔者认为对贸易产生影响的PPMs本身并不被WTO所禁止,WTO禁止的是对它的滥用和误用,PPMs在WTO框架内具有合法的地位。 PPMs are one of the most difficult issues in the WTO dispute over trade and environment. The debate is about whether the trade measures adopted on the basis of PPMs are legal and fair. For a long time, it seems that a consensus has emerged that the WTO prohibits trade restrictions based on PPMs, ie PPMs do not have a legal status within the WTO framework. I believe that the impact of trade on the PPMs itself is not prohibited by the WTO, the WTO prohibits its abuse and misuse, PPMs have a legal status within the framework of the WTO.