Abstract: The Paleo-Asia Tectonic Domain between the Sino-Korea, Tarim and Siberia old landmasses presented not only in Pre-Mesozoic, but also in Mesozoic-Cenozoic period. The Paleo-Asia Tectonic Domain does not equal to the PaleoAsian Ocean and corresponding tectonic domain. Being a part of the Paleo-Aisa Tectonic Domain, the Paleo-Asian Ocean appeared in Late Cambrian-Ordovician, and ended in Middle Triassic. The Paleo-Pacific Ocean and its tectonic domain formed in Late Paleozoic, and transformed into the Marginal Pacific Tectonic Domain in Post-Indosinian epoch. It coexisted with the Paleo-Asia Tectonic Domain, to form the intraplate orogenic belt, partial basin-and-mountain structure and northeastern highlands in the two tectonic domains during the Late Triassic-Jurassic epoch. The NNE-striking basinand-mountain system, dominated by the Marginal Pacific Tectonic Domain, finally formed in Early Cretaceous.