The aim of this article is to analyze the potential impact of international climate law on the trade liberalization. Flexibility mechanisms introduced by the Kyoto protocol and Paris agreement result in the creation of trade-related environmental measures. Those measures are created by the states in their national policies aiming at implementation of flexibility mechanisms into national legal orders. Trade-related environmental measures are not directly identified by the WTO law. This creates a situation where such measures may be challenged in the WTO dispute resolution system. Article shows potential threats and tries to underline axiological common ground between climate change law and WTO law, which enable wider acceptance of the use of trade-related environmental measures between the WTO members.