Based on the basic principle and structure of Wind Profile Radar (WPR), the observations by WPR are compared with the corresponding radiosonde data. The results suggest that WPR observations of wind speed and direction are consistent, but WPR temperatures are inconsistent. The distribution of the available rate of the wind profiler data within PBL and the effect of different weather on the available rate are discussed. Results show that the available rate within PBL is greater than 80%, and the detecting capability at the lower troposphere and middle PBL is far greater than that at upper levels; the detecting height after rainfall is greater than that before rainfall at upper levels; the available rates in the different weather are almost consistent at lower levels; the available rate in overcast and rainy weather are greater than that in fine weather, while the detecting height in overcast and rainy weather is greater than that in fine weather at upper levels.