Abstract: In recent decades, marine geological work in China has focused on geological structure, mineral resources, environmental disaster and probing technology in the coastal zone, offshore and jurisdictional sea area, edge sea of continental shelf and deep sea. A series of important achievements have been obtained. In the eight-year project named Marine comprehensive survey and evaluation in Chinese coastal waters, the following important achievements were obtained, such as 16 comprehensive survey sheets in the jurisdictional sea (scale: 1∶1 000 000), 13 comprehensive survey sheets (scale: 1∶250 000) and sea-sand resources evaluation of 9 blocks; the new discoveries of 3 large gas fields in Southeast Hainan Basin of the north of South China Sea, resources and environment atlas of the coastal region (scale: 1∶4 000 000); the new discovery of the topic named Process evolution of the South China Sea Deep; the new discovery of science drilling in continental shelf of South Yellow Sea, technology for exploration-exploit the nature gas field (Offshore Oil 981 drilling platform); probing technology and discovery for hydrate in the north of South China Sea (II-hydrate and cold spring of hydrate), and research progresses for probing technology and sample-collecting equipment in seabed. The important achievements above have greatly improved the degree, research level and comprehensive power of marine geological survey in China.