Abstract: The paper aims to study the applicability of automatic station data in Mingshui Heilongjiang. The author compared soil moisture content under manual observation and automatic observation in Mingshui from February 28, 2013 to November 8, 2014, and analyzed the differences, difference probabilities and the correlation coefficient of soil moisture obtained by automatic observation station and manual observation, then built a correction equation by comparing the data to eliminate some differences. The results showed that: the correlation between the data of manual and automatic observation in Mingshui was significant in all layers from February 28, 2013 to November 8, 2014, and the relative humidity of soil observed by automatic station was higher than that by manual observation, the difference between shallow soil 0-10 cm and deep soil 30-40 cm was relatively small, the difference between soil layer 20-30 cm and soil layer 40-50 cm was more obvious. Finally, a revised equation was built which eliminated some differences between the data obtained by automatic observation and manual observation. The variation trends of data by manual observation and automatic observation were consistent, the moisture data observed by automatic observation station could replace those of manual observation.