The invention discloses a high-modulus impact-resistant HDPE double-wall corrugated pipe and a preparation method thereof. The high-modulus impact-resistant HDPE double-wall corrugated pipe comprisesthe following raw materials: high-density polyethylene, high-modulus PP, HDPE stiffening master batch, HDPE toughening master batch, polyester modified acrylic resin, siloxane modified acrylic resin,modified color master batch, nano calcium carbonate, modified talcum powder, glass fiber, a titanate coupling agent, an antibacterial agent, a plasticizer and an antioxidant. High-density polyethyleneand high-modulus PP are used as matrixes, HDPE stiffening master batch and HDPE toughening master batch are added to serve as preparation base materials of the high-modulus impact-resistant HDPE double-wall corrugated pipe, the HDPE stiffening master batch and the HDPE toughening master batch serve as rigid particles, the high-density polyethylene is modified through modified talcum powder, strong chemical bonds are formed, in combination with the layered structure characteristics of the talcum powder, the impact strength of the high-density polyethylene matrix is increased while the rigidityis increased, and the effects of increasing the rigidity and maintaining the toughness are achieved.