A flame retardant smoke resistant wood plastic composite material relates to a wood plastic composite material, which solves the disadvantages of low flame retardant performance, big smoke mass, large addition of flame retardants, increased cost and decreased mechanical property of existing wood plastic composite materials. The product of the invention is mainly formed by polystyrene and/or polyvinyl chloride fortified with heat stabilizers, lignocellulose, intumescent flame retardant, compatibilizer, lubricant. The flame retardant and smoke-resistant performance of the product of the invention is greatly improved. For wood powder/ polystyrene composite material, compared with no addition of flame retardant, the average heat release rate is decreased by 48 percent, the quantity of smoke yield is reduced by 30 percent and the CO yield is decreased by 28 percent during combustion. The product of the invention has high oxygen-index, long ignition time and no droplet, which greatly reduces the fire hazard of the material, and the appearance of the material is similar with wood. The product of the invention also has low cost, wide application range and good creep resistance, forming performance and mechanical property.