Abstract: In order to evaluate the monitoring ability of the DZN1 soil moisture, analyze its service benefits, and provide a reference basis for the wide use of the DZN1, the author made a difference contrast and probability the correlation analysis according to the automatic soil moisture observation station and artificial parallel contrast observation of soil relative humidity data on February 28, 2011 to December 13 in Qihe County. The results showed that artificial observation data and the data obtained by the automatic stations were basically the same trend over time, 10 cm and 40 cm soil layer artificial observation data was closed to the automatic station data, manual and automatic observation of 40 cm soil layer of soil relative humidity average difference in the 8 levels for the minimum, 60 cm average difference level to the maximum. The correlation of the data from the manual and automatic observation stations made an excellent performance in all aspects. It gave people the reasons for deviations and instrument problems in running which should be paid more attention to. Summing up the above, it believed that the DZN1 automatic observation station data could replace the artificial observation data.