Abstract: The coastal blue carbon ecosystem has become an important naturebased solution to climate change. This study sorts out the coastal blue carbon resources, annual carbon burial and burial value in the coastal countries, and classifies them according to three indicators of economy, science and technology, and blue carbon burial. The countries with the widest distribution of coastal blue carbon ecosystems are Australia, Indonesia, Mexico and the United States, while Indonesia, Australia, Malaysia and Brazil have the highest carbon burial. The global annual carbon burial values under carbon trading prices and carbon tax prices are 3.47×10⁹ and 2.35×10⁹, respectively. China has rich coastal blue carbon resources, the coastal blue carbon system area ranks 10th globally, while China’s annual coastal blue carbon burial capacity every year ranks the 21st in the world. However, the resource endowment of coastal blue carbon ecosystems is poorly matched with the value under the existing carbon price system, the coastal blue carbon burial value ranks the 27th under carbon trading prices while the 39th under carbon tax prices. The low carbon price will lead to a disadvantage in the international blue carbon trading. Thus, China should continue to improve the carbon emission trading market. However, China has advantages in blue carbon research and restoration investment and practice, as well as characteristic blue carbon resources such as seaweed farming and marine ranching. China can formulate diversified cooperation strategies in combination with the economic and technological conditions as well as natural geographical conditions of different types of blue carbon countries.