The invention discloses a soil remediation method capable of removing omethoate components in farmland soil. The method has the advantages that by creatively utilizing microbial degradation reaction of bacillus cereus, with participation of transphosphorylase, C-P bonds in the main components, O,O-dimethyl-S-[2-(methylamino)-2-oxo-ethyl] thiophosphate molecules, in omethoate, are broken and the main components are gradually degraded into harmless simple compounds, such as CO2, N2 and H2O, in a temperature range of 35-38 DEG C; the soil purified through microbial degradation can be repeatedly applied to agricultural production; meanwhile, no toxic chemical substances are used or generated in the method, thus basically putting an end to secondary harm to the environment in the soil remediation process.