The COVID-19 epidemic broke out in 2020. In the face of the grim situation，the prevention and control of the epidemic were consistently strengthened throughout the country in 2020，and the deployment and implementation of some marine intangible cultural heritage were postponed. However，on the whole，the construction process of marine intangible cultural heritage has maintained a basic trend of stability and improvement. Many projects have been carried out step by step，and the protection and development measures adopted have shown initial results. This report sorts out and summarizes the development status，development results and existing objective problems of China’s marine intangible heritage in 2020. Taken together，the year 2020 is not only a year for ending poverty alleviation，but also a crucial year for realizing a moderately prosperous society in all respects. Against the backdrop of poverty alleviation efforts，the marine intangible cultural heritage project has made new progress，adding new bricks and tiles to the comprehensive realization of a well-off society. In 2020，all coastal provinces and cities will pay more attention to the development mode of “culture+tourism”，and the marine cultural industry is an important industry to drive the development of coastal economy. In addition，under the influence of the epidemic，many marine intangible heritage cultural activities and cultural products have gradually explored a new development model of “marine intangible heritage+e-commerce”. This is undoubtedly a new exploration to promote the dissemination and development of marine intangible cultural heritage，and a new measure to realize the innovative development of marine culture.