Abstract: The present invention relates to a composite material for high-impact polyvinyl chloride reinforced pipe, belonging to the polymer materials technology field. In order to solve the shortcomings of rigidity and toughness of the existing materials, the present invention provides a composite material for high-impact polyvinyl chloride reinforced pipe, comprising: polyvinyl chloride resin: 100; heat stabilizer: 2.0˜8.0; lubricant: 0.1˜7.0; processing modifier: 0.1˜5; composite toughening agent: 8˜50. The composite toughening agent is a masterbatch mainly composed of an elastic polymer, a dispersant and a nano-montmorillonite, and mass ratio of elastic polymer:dispersant:nano-montmorillonite in the composite toughening agent is 58˜85:0.1˜12:10˜30.