Western Pacific is definitely the place one has to pass through when China implements the national ocean strategy from shallow water to deep sea. From the view of national demands, western Pacific is rich in the sea bottom resources and the marine environment there is quite complicated, so it would be the focus to safeguard national interests and one of the barriers in national security; From the view of scientific frontier, western Pacific has the particular trench-arc-basin tectonics, backarc basin hydrothermal systems, the remains of oceanic plate motion and lots of seamount ecosystems, and there also has the cold/warm water conversion zone of the thermohaline ocean circulation. Launching the western Pacific deep sea scientific research with wellplanned strategy for about 10 years exploration and research, the breakthrough in China′s deep sea research will be surely achieved.