Using the wind speed data of Jiangsu 460 automatic and intensive observation stations from 2005 to 2006,the high wind process of Jiangsu from winter 2005 to spring 2006 are analyzed,results show that the coastal gales in the winter and spring were induced by strong cold air intrusion,and had certain intermittence,duration and burst and gusty characters.Characteristics of a typical gust process from 2nd to 4th December 2005 are emphatically analyzed.It is found that the intrusion of cold surges promoted the development of ground wind,the changes of u,v components of gale were close correlated with rotation coefficient,i.e.Hourly rotation coefficient was positively correlated with v component variation and negatively correlated with u component variation;and such a correlation were maintained throughout around the cold air intrusion.