The invention provides a plastic porous material, and the plastic porous material is characterized by comprising polymer resin, metal powder and dispersing agent in total weight: the content of the polymer resin is 76-99%, the content of the metal powder is 0.5-22.7%, and the content of the dispersing agent is 0.5-1.5%. The plastic porous material provided by the invention is uniform and fine in hole distribution, and the plastic is good in mechanical property; the metal powder is used as pore-foaming agent to manufacture porous materials, dilute acid can be used for treating the metal powder and resin extrusion film, the treatment time is short, and the treatment effect is complete and free from residues; the structure regulatory property of the material hole prepared through the method is strong.