This paper describes the experimental results backscattering from wave surfaces by using microwave scatterometer. Active microwave remote sensing is considered to be very useful to observe the vast ocean at one time, while the ocean phenomena change quickly. The characterization of the microwave backscattering from wave surfaces is investigated in a wind wave tunnel and a square basin by using a C-band (5.2 GHz) microwave scatterometer. This paper clears the relationships between microwave backscattered power and wind driven waves. The significant wave height of wind wave and the average period, the wave direction contribute to Backscattering. The HH and VH-polarization are effective for monitoring the wind wave than the VV and HV-polarization.