The invention discloses a high-toughness foamed plastic, the raw materials of which include by weight: 45-50 parts of polybutylene succinate PBS, 30-35 parts of polylactide PLA, 2.5-3 parts of peanut meal of 700-800 mesh , jute fiber 2-5 parts, titanate coupling agent NDZ-1011.2-1.7 parts, potassium sorbate 2-3 parts, dehydroacetic acid 1.1-1.6 parts, foaming agent TSH14-18 parts, sodium citrate 5- 8 parts, ammonium bicarbonate 15-19 parts, dimethyl phthalate DMP 2.7-2.9 parts, petroleum phenyl sulfonate M-502-5 parts, heavy calcium carbonate 3-5 parts, quartz powder 15- 18 parts, 7-11 parts of kaolin, 5-9 parts of mica powder, 3-6 parts of decabromodiphenylethane, 2-4 parts of antimony trioxide, 2-4 parts of melamine, 1.2-1.8 parts of antioxidant SP , antioxidant DFC-34 1.5-2.4 parts.