Compliance is an obligation in international law, which aims to reach the ideal state of the treaties. Under the Paris Agreement, the “Double Carbon” commitments are given certain legal attributes through the mechanism of Nationally Determined Contributions (NDC). China has always attached great importance to compliance, but there are still many challenges to achieve the commitments. Firstly, uncertainties in the realization of the commitments are even higher for developing countries that see a more complex external environment, along with the rising of unilateralism, protectionism and “de-globalization”. Secondly, As the largest developing country in the world, China is shouldering the arduous tasks such as economic development, people’s livelihood improvement and environmental governance. Thus, there are higher requirements to meet the commitments, with the continuation of industrialization and urbanization. However, with the orientation of compliance, the commitments may be achieved at international and domestic levels: on one hand, to promote the reconstruction of shared knowledge and identity to enhance trust and dispel doubts, through international cooperation in the field of “carbon”; on the other hand, to make the “ideal” to be “reality” to advance comprehensive green transformation in an orderly manner, through the top-level design and “Double Carbon” actions.