Remediation method for VOC pollution of low-permeability soil body

The invention relates to the technical field of soil remediation, and discloses a remediation method for VOC pollution of low-permeability soil body. According to the invention, an injection pump is utilized, and a surfactant is injected around a VOC-polluted area of the low-permeability soil body through a plurality of injection wells so as to improve the gas permeability of polluted soil body and enhance the desorption effect of the pollutant VOCs in the soil body; and then, a liquid of cultured indigenously dominant degrading bacteria is injected around the VOC-polluted area of the low-permeability soil body. According to the invention, sodium N-lauroyl amino acid is adopted as the surfactant, so the surface tension of a saturated soil body can be reduced, the gas inflow value of the soil body can be reduced, and the infiltration capacity of gas in the soil body can be enhanced; a pulse aeration method is adopted for aeration repair, the mixing degree of the gas and the polluted soil body is improved, the