The invention discloses a plastic pipe which is prepared from the following raw material components in parts by weight: 100-130 parts of polyurethane resin, 80-100 parts of rosin resin, 80-90 parts of petroleum resin, 60-90 parts of an acrylonitrile-butadiene-styrene copolymer, 120-130 parts of phenolic resin, 100-120 parts of terpene resin, 8-10 parts of calcium stearate, 5-8 parts of magnesium stearate, 5-8 parts of hydroxypropyl methyl cellulose, 3-5 parts of potassium sorbate, 10-15 parts of silicon dioxide, 8-10 parts of zinc stearate, 8-10 parts of aluminum stearate, 10-12 parts of activated carbon, 10-12 parts of aluminum oxide and 10-12 parts of titanium oxide. The plastic pipe is good in aging resistance and relatively good in flame retardancy, the decomposition temperature and the combustion residual rate of a material can be increased, the thermal stability of the material can be improved, the production cost can be lowered, and the product quality can be improved.