The invention discloses a method for preparing controllable shallow oxidized paraffin and belongs to the technical field of oxidized paraffin preparation. Firstly, microorganisms in oil-containing sludge of an oil refinery are subjected to culture and enrichment to obtain a culture solution, then paraffin and microcrystalline wax are mixed and fused, the mixture is added dropwise and dispersed in the culture solution in the high-speed stirring state, mixing, fermentation and activation are conducted, toughness of raw material paraffin is improved so that paraffin can not crack easily, then washed wet powder is mixed with calcium oxide for drying, calcium hydroxide is generated and used for improving hardness of a product, then compressed air serves as weak oxidant under the catalytic condition of manganese stearate, and paraffin is oxidized to prepare the controllable shallow oxidized paraffin through injection molding and curing. The method has the advantages that the obtained product is good in toughness, hardness is as high as 6-10 H, mixing, fermentation and activation of the mixed paraffin and the culture solution are fully used, calcium oxide is added to improve toughness and hardness, pertinence is high, and the problem that breaking happens under the action of external force is effectively solved.