Using the wind data at onehour interval of 12 CAWS600 sets and the data of BJANC and AWS, the occurrence frequencies of various level winds over the Olympic RowingCanoeing Park in August 2007 are statistically analyzed. Meanwhile, the features of wind speeds and directions are also analyzed. The results show that from 08:00 to 18:00 (Beijing Time), the frequency of wind speed being 0 to 2 m/s accounts for 82% with the maximum at 08:00, and that being 3 to 5 m/s accounts for 41% at 09:00, then 6 to 8 m/s accounts for only 14% at 15:00, that of more than 9 m/s is very small, which are related to strong convective weather. The analysis shows that the weak and narrow echo bands in BJANC reflectivity products can be used to predict wind direction variation. When a weak and narrow echo band moves through the Olympic RowingCanoeing Park, there will variation in wind speed and direction; when two weak and narrow echo bands run into each other, the storm will intensify, which is of significance to the meteorological support of Olympic rowing races.