Abstract:Wind vectors can be observed by the QuikSCAT/SeaWinds(QSCAT) satellite mission, which are at a height of 10m above the local mean sea surface. It plays an impor tant role in the monitoring and further theoretic analysis of tropical cyclones (TCs). Based on the introduction of status and development of ocean wind satell ites, the wind vectors products processing methods and the application for TCs d etection is expatiated. Then, the worked QSCAT wind vectors are va lidated by comparing with the QSCAT original data and the winds with in situ obs ervations by ocean buoys. It was found that the accuracy varied across the swath, with average absolute errors in speed of 0.71m.s-1 and in the direction of 26.29°, whi le the root mean squared differences are 1.2m?s-1 and 29.33°, respecti vely. For the more convenient using the database, the researchers in National Sa tellite Meteorological Center (NSMC) treat with the wind vectors to regular grid ded data even in the 0.1°×0.1° area, also to MICAPS format. In research app lications, the QSCAT wind vectors token directly the location and intensity of T Cs, especially earlier detection, with the distinguishing the powerful wind area . In addition, it also allows the study of determining what promotes tropical cy clogenesis, due to the analysis of air stream fields.