Flame-retardant polyamide composite material and preparation method thereof

The invention discloses a flame-retardant polyamide composite material and a preparation method thereof, the flame-retardant polyamide composite material comprises a fixed base, and the fixed base comprises the following components in parts by mass: 50-70% of polyamide resin; 15%-25% of an inorganic flame retardant; 8%-15% of a reinforcing agent; 15%-20% of fiber; 15%-20% of an antioxidant; 3%-5% of a resin lubricant; the reinforcing agent is composed of the anhydrous magnesium carbonate inorganic flame retardant, the glass beads and the calcium carbonate particles, and during combustion, carbon dioxide released by anhydrous magnesium carbonate and the calcium carbonate particles releases carbon dioxide around a base material of the composite material, so that contact between oxygen and flames is hindered, and the composite material is extinguished; meanwhile, the flame retardance of the base material is improved through the glass fibers and the carbon fibers, so that the polyamide composite material has bett