Abstract: Using the method of statistics test to make comparative evaluation of the old and new station's observational data,which observed in Sichuan recent years.The results showed that moved to the new station have improved the observation environment,reduced the influence of heat island effect and the temperature observation value,but also increased the relative humidity and wind speed of observations.The influence to extreme temperature was greater than average temperature.The precipitation,relative humidity and direction had large influence,and wind direction had poor consistency.Due to the extent of the damage to the old station,surrounding obstacles form of existence,a prescription,distance,the underlying surface condition,migration distance and height difference of different,led to the different influence of the meteorological elements,and the different influence to each moved station.