The invention discloses a plastic packaging material. The plastic packaging material is prepared from the following material components in parts by weight: 20 to 40 parts of polystyrene, 15 to 25 parts of polycarbonate, 10 to 15 parts of cellulosic fiber, 3 to 7 parts of talcum powder, 2 to 5 parts of calcium carbonate, 3 to 5 parts of plasticizer, 4 to 6 parts of light stabilizer, 2 to 5 parts of antioxidant, 1 to 3 parts of lubricant and 2 to 4 parts of antistatic agent. The mechanical properties of the plastic packaging material relating to the invention are excellent, and the plastic packaging material has excellent rigidity and impact property and good dimensional stability; added with the cellulosic fiber, the talcum powder and the calcium carbonate, the packaging material disclosed by the invention has certain degradability.