The invention discloses a special material for direct spray coating of a bumper, which is prepared by mixing of polypropylene, a rubber toughening agent, a crosslinking agent, grafted polypropylene, inorganic filler, black master bath, an antioxidant and a light stabilizer in proportion, preparation of the master bath, dynamic vulcanization, secondary extrusion, multi-monomer fusing and grafting, etc. The polarity of the special material for the bumper is changed by multi-monomer fusing and grafting modification of methyl methacrylate and so on, and the surface activity of the special material for the bumper is increased; and spray coating paint of the bumper comprises a plurality of chemical compositions, the appetency of various compositions and given functional groups is insufficient, a plurality of active functional groups are formed on the surface of the material by activation of a plurality of functional groups and can simultaneously form physical absorption or chemical bonding with the various chemical compositions in the paint, thereby the special material can perform direct spray coating without flame treating, achieves the optimum spray coating effect, and has good processing fluidity and high toughness.