The invention discloses an anti-weathering pipeline and a preparation method thereof. The anti-weathering pipeline is prepared from the following raw materials in parts by weight: 10 to 20 parts of gypsum, 7 to 9 parts of dihydroquinoline polymer, 5 to 15 parts of ceramic waste, 10 to 12 parts of butadiene styrene rubber, 2 to 4 parts of polydimethylsiloxane, 6 to 10 parts of PE (polyethylene) plastic particle, 5 to 7 parts of hydroxyl silicone oil, and 1 to 2 parts of bromination epoxy flame-retardant agent. The anti-weathering pipeline has the advantages that the effect of preventing and controlling plant powdery mildew is obvious, the sources of raw materials are wide, the preparation is easy, the cost is low, and the market prospect is broad.