The United States has not withdrawn from the Paris Agreement, despite the president Trump's announcement. This is because the Paris Agreement limited the withdrawal of the U. S. from its provisions. To this,legal formalism believe that legal form of international law has bought the institutional sticky against the U. S. withdrawing action,which demonstrates the normative power of international law. In the future,China would pay more attention to the form of elements about the Paris Agreement following rules,realize to lock power of discourse and remaining power into rules design as so to maintain China's core national interests in the global climate change institutional arrangements.