The invention discloses a method for directionally oxidizing
crude oil in soil by passivating SOM through iron regulation and control and passivated soil, wherein the method comprises the following steps: passivating organic matters in oil-containing soil: uniformly mixing the oil-containing soil,
ferrous salt, a passivating agent and water, and carrying out oscillation
passivation to obtain the passivated SOM oil-containing soil; and mixing the passivated SOM oil-containing soil with an oxidant and water, and carrying out continuous oscillation oxidation reaction to finish the process of directionally oxidizing the
crude oil in the soil by passivating the SOM through iron regulation and control. According to the method, the consumption of free radicals of
protein I, the consumption of free radicals of
protein II and the consumption of functional groups C=O in the directionally oxidized soil are reduced by passivating the SOM through iron regulation and control; the directional oxidation amount is as high as 3100 mg / kg. The efficiency of directly oxidized
crude oil by .OH is improved.