The tectonic types of the Zhujiang (Pearl) River Mouth Basin in the South China Sea are epicontinental rift-depression basins.Prior to Early Cretaceous time, the Dongsha Uplift arid its surrounding depressions had been combined with the Eurasia Plate in a single unit.Many ENE-trending narrow rifted basins were formed in the third episode of Yanshan orogeny (Late Laramide).The rifted basins in the Paleocene and Eocene were stretched and extended, forming Zhu 1, Zhu 2 and Zhu 3 depressions.The Dongsha Uplift is located between Zhu 1 and Zhu 2 depressions.covering an area of 28 000 Km2.Its geologic evolution can be divided into four stages: (1) Late Cretaceous-Paleocene block-faulting stage. (2) Eocene-Oligocene uplifting and eroding stage. (3) Late Oligocene-Early Miocene sustained subsiding stage. (4) Middle Miocene-Recent noncompensated subsiding stage. The Dongsha Uplift is a structural zone favourable for oil-gas accumulation.