Abstract:Marine economy plays an important role in the growth of the global economy. With its continuous development in the past years, the driving roll of marine economy in China's economy has become remarkable. It is of strategic significance for China's economic sustainable development to strengthen the exploration of marine resources and promote the quality and profit of the marine economy. To explore sustainable marine resources, one important economic management method is to implement paid use system, specify marine resource property rights and collect Charges for Sea Area Utilization (CSAU). With the approval of the "Guangdong Marine Economic Experimental Zone Program", Guangdong province targets the building of an economically strong marine province. The collection and rational expenditure of CSAU not only play a positive role in the rapid and sustainable development of the marine economy, but also offer financial guarantee and support for the building of an economically strong marine province. In this paper, the CSAU collection and expenditure in the past decade after the issuance of the Sea Area Use Management Law and the corresponding performance were evaluated and analyzed, and the problems in the CSAU collection and management were discussed. Furthermore, countermeasures were proposed to perfect the CSAU expenditure management policy, define the distribution proportion at all levels, optimize the expenditure structure, and strengthen the supervision and management mechanism. The results and conclusion of this paper could not only greatly promote the construction of marine economy, rational development and sustainable use of marine resources, but also provide a reference for other coastal provinces in China.