Bases on the fact that wind field has some degree of spatial correlation, selecting Rudong climatological station and Taiyangtan as the on site,the correlation analysis between both the stations is derived and the regression equation is established under the condition of either taking into account wind directions or not.When considering the wind directions, using sixteen wind direction and four wind direction,respectively. The correlation coefficient is obtained from these two short range wind records,thus, the long range average wind speed of Taiyangtan is further estimated.