Paleo-temperature reconstruction is one of the most important components in paleoceanographical studies.The evolution of surface currents driven by paleo-temperature plays an important role in global climate change.In recent years,three newly geochemical proxies(Mg/Ca,Uk'37 and TEX_(86))have been widely accepted despite some defects.In the Okinawa Trough,there are obvious discrepancies among the results using different paleo-temperature proxies and the mechanism is unknown.In this paper,we summarized the applicability,merits and faults of the above three paleo-temperature proxies from a global perspective,and analyzed their temporal and spatial differences of the results.Emphases are put on the research history and status in quo of Mg/Ca,Uk'37 and TEX_(86)in the Okinawa Trough,the importance of regional applicability of these paleo-temperature proxies,and the future challenge of paleo-temperature evolution mechanism studies since the last deglaciation in the Okinawa Trough.