Microwave microwave polarimeter is a sensor of measuring not only the vertical-and horizontal-polarization, but also the third and/or the forth Stokes parameters. It realizes all information about electromagnetic wave, including frequency, phase, amplitude and polarization,to be measured by a senor. The correlated information of the first two Stokes parameters is more sensitive to the anisotropy of the ocean surface. Wind direction retrieval is one of the initial motivations of the polarimeter development. In this paper, the progress and characteristic on polarimeter development are introduced and theories of ocean wind vector remote sensing are analyzed. Oceanic emission and scattering model is develoked for remote sensing wind vector using passive polarimetric microwave radiometer. The critical techniques on its system design, which include receiver and calibration methods, are discussed in order to realize scientific target of wind retrievals. Furthermore more efforts are paid on expatiating scientific topics on wind reversion methods, including geophysical model function built-up, influences of main technical specifications on retrieval precision, and wind direction ambiguity removal methods by data-processing methods and scanning geometry. The calibration errors and main specifications of polarimetric radiometer,which have significant influences on the accuracy of wind vector retrieval,are summed in detail.Finally,a new scanning geometry with fore-aft-look to remove wind direction ambiguous solution is put forward.