The invention discloses a method for preparing a porous oil-containing lubricating material and belongs to the technical field of lubricating material preparation. In the invention, prepared black fungus powder is mixed with chitinase solution through stirring, enzyme deactivation and centrifugal separation treatment are performed to obtain supernatant, the supernatant is mixed with absolute ethyl alcohol, then centrifugal separation and sediment collection are performed to obtain black fungus polysaccharides, then the black fungus polysaccharides, deionized water and trisodium citrate are subjected to heating and ultrasonic dispersion treatment to obtain black fungus polysaccharide dispersion liquid, then lubricating mixture liquid prepared by mixing lubricating oil with the black fungus polysaccharide dispersion liquid is mixed with styrene monomers and acrylate, heating and filtration are performed, a filter cake is collected, washed and dried to obtain modified oil-containing resin particles, the modified oil-containing resin particles are mixed with talcum powder and azodicarbonamide, then kneading is performed, and then discharging and cooling are performed to obtain a porous oil-containing lubricating material. The lubricating material prepared by adopting the method disclosed by the invention has the advantages of high porosity, uniform distribution, high material strength, good binding force with substrates and greater application space.