Based on the wind speed samples collected by the ultrasonic anemometers atop Shanghai World Financial Center during Typhoon Rumbia, the fluctuating wind characteristics parameters, such as the mean wind characteristics, turbulence intensity, gust factor, peak factor, turbulence integral scale, and power spectral density are analyzed in detail. It is found that the variation trends of the mean wind speed in 3 seconds, 10 minutes and 1 hour within an hour are consistent with each other. Turbulence intensity decreases first and then stabilizes with the augment of mean wind speed. The mean values of longitudinal and lateral turbulence intensity are 0.135 and 0.132, respectively. The gust factor increases linearly with the increase of turbulence intensity. The turbulence integral scale shows no obvious variable trend with the increase of the mean wind speed. The measured wind speed spectra agree well with the Von -Karman spectra.