The invention discloses a special material for a drip irrigation zone and a preparation method thereof. The special material comprises the following raw materials (by weight): 99.9-100.0 parts of ethylene and 1-butylene copolymerization polyethylene base resin, 0.03-0.08 part of an antioxidant, and 0.03-0.05 part of a slipping agent, wherein the antioxidant comprises a main antioxidant and an auxiliary antioxidant, and the weight ratio of the main antioxidant to the auxiliary antioxidant is 1-8; and melt flow rate of the ethylene and 1-butylene copolymerization polyethylene base resin is 0.62-0.67 g/10 min, and the density is 0.928-0.937 g/cm<3>. The invention also discloses a preparation method of the special material for a drip irrigation zone. The special material for a drip irrigation zone has moderate molecular weight and molecular weight distribution and is suitable for production of a drip irrigation zone. In addition, the product has good processability and high strength.