Due to its unique geographical location and the natural ecological environment,New Zealand is particularly vulnerable to global climate change. This article tries to find out the reasons behind New Zealand's such an active climate change policy and the domestic impact it had for implementing a number of specific climate change policies and measures, such as carbon emissions trading scheme(ETS), as well as its implications for our climate change policies. On the other hand, this article also tries to better understand the influence climate change has on the world's environment and economy through a deeper study of climate change,so as to promote the international community to address climate change mechanism forward. <<