This paper developes a method to retrieve the typhoon intensity and location of the typhoon center from QuikSCAT.The typhoon intensity is derived by searching the maximum of the wind speed where the typhoon is present.The method to derive the location of typhoon center is based on the knowledge of typical wind field structure of mature typhoon

by searching the center of the helix structure of wind direction

local minimum of the wind speed around the typhoon eye

or the local minimum of the back scattering coefficient.To improve the accuracy of wind vector retrieval in typhoons

the Holland’s typhoon model is employed in the process of ambiguity removal to correct the wind direction error caused by the failure of Circular Median Filter（CMF） around the eye wall

while the Geophysical Model Function（GMF） NN-T-GMF is used as a replacement of the QSCAT-1 to reduce the bias induced by the inaccurate of the existing business operational GMF at high winds.Based on this method

the track and changes of typhoon intensity for typhoon Ioke and Kaemi are extracted from continuous QuikSCAT data.The results are comparable with the best-track analysis result form National Hurricane Center

indicating that QuikSCAT can be a powerful instrument to monitor and track typhoons.