Abstract: To achieve simultaneous, rapid, and accurate determination of 2,4-dinitrotoluene, 2,4,6-trinitrotoluene, and hexogen in soil, the study mentioned by the title was conducted. Soil samples were collected and freeze-dried for about 40 h at −50 ℃ and vacuum pressure of 9 Pa. An aliquot （20 g） was taken and homogenized, followed by pressurized fluid extraction using the mixed solution of acetone and n-hexane at volume ratio of 1∶1 as the extractant under extraction temperature of 100 ℃ and nitrogen purge time of 20 s. After the extract was concentrated to about 1 mL at 40 ℃, the solution was passed through the activated magnesium silicate column, and the effluent was collected, and concentrated to about 0.5 mL by nitrogen under atmospheric pressure. The volume of the solution obtained was made up to 1.0 mL with the mixed solution of acetone and n-hexane at volume ratio of 1∶1. The resulting solution was introduced into the gas chromatograph, and target compounds were separated on DB-5 and DB-17 columns under the temperature programmed conditions, and detected using electron capture detector. It was shown that linear relationships between the mass concentrations and peak areas of the 3 target compounds were kept in definite ranges, with detection limits （3.143s） of 2, 1, 2 μg·kg⁻¹, respectively. Test for recovery was performed using the standard addition method, giving recoveries in the range of 71.6%–118%, and RSDs （n=6） of the determined values ranged from 1.6% to 13%.