Based on the data of two anemometer towers located on Jiangsu coastal land and one on Fujian sea surface,the daily variation and profile features of wind velocity and turbulence intensity are analyzed,and the differences of wind features resulted by two different underlying surfaces are discussed.Results show that the daily maximum wind speed in coastal land occurrs later than that in inland,but the minimum wind occurrs nearly at the same time.The phase of daily variation of wind velocity delays along with altitude and the daily swing grows down.Wind speed of 70 m-height at night is bigger than that in daytime in winter,which is opposite to that of 10 m-height,showing that the height of transition layer in winter is lower than that in summer.The differences of daily variation phase of wind velocity are tiny among different altitudes over sea.Both exponential law and logarithm law can fit wind profiles of two different underlying surfaces.The law of wind profile exponent over coastal land shows that the exponent of group of wind from coast is greater than that of group of wind toward coast,and the exponent in winter is bigger than that in summer.The law of wind profile exponent over sea shows that the exponent of group of wind toward coast is bigger than that of group of wind from coast,and the exponent in summer is bigger than that in winter.