[Objective] The soil water content in Horqin sandy land was measured by ECH₂O EC-5 sensor to validate the reliability of the sensor. [Methods] Values obtained by weighting method was compared with the ones of ECH₂O EC-5 sensor measurement, and calibrated with regression analysis. [Results] The equation of water correction between the values of weighting method and the ones of sensor measurement for the sandy land was a linear function(R²=0.96, p<0.01). The validation results showed that the root mean square error(RMSE) and relative root mean square error(RRMSE) between the soil water contents predicted by regression equation and the contrast standard values were 0.38%, 6.29%, respectively. [Conclusion] Soil water contents measured by ECH₂O EC-5 sensor for sandy land were accurate and reliable.