Climate change is an essential threat to small island states,which call on strengthening adaption action.Domestic climate change litigation indicated the role of judicial bodies in climate change governance.Recently,some international judicial bodies were asked to provide advisory opinions on climate change.Although the treaty did not stipulate the advisory jurisdiction,ITLOS interpreted its jurisdiction in light of the agreement among several countries,leading to concerns about the over-expansion of its advisory jurisdiction.Climate change is a common concern of the international community and involves the interests of all parties.Although advisory opinions are not legally binding,they have an impact on the obligations of other States.Given the political and complex nature of climate change issues,advisory opinions could reinforce antagonisms between different interest groups and impede global climate action.International judicial bodies should carefully consider their jurisdiction and the effects of issuing advisory opinions.We should actively participate in the advisory proceedings,imposing limitations on the jurisdiction expansion,and promote global climate governance.