The invention discloses an insect-prevention wood-prevention degradable environment-friendly mulching film. The insect-prevention wood-prevention degradable environment-friendly mulching film comprises an outer-layer mulching film and an inner-layer mulching film, wherein the outer-layer mulching film comprises the following components in percentage by weight: 30% of metallocene polyethylene, 35% of linear polyethylene, 5% of high-pressure polyethylene, 25% of light calcium carbonate, 3% of neem oil, 1% of atrazine and 1% of degradable master batch; the inner-layer mulching film comprises the following components in percentage by weight: 30% of metallocene polyethylene, 33% of linear polyethylene, 5% of high-pressure polyethylene, 1.5% of degradable master batch and 0.5% of a light stabilizer master batch. The insect-prevention wood-prevention degradable environment-friendly mulching film disclosed by the invention can be used for preventing various insects, inhibiting weeds, and preserving the temperature and water, has a natural degrading function, and finally can become nutrient substances of CO2, H2O and the like which are beneficial to the plant growth, and can be used for improving soil, and achieving the effects of saving petroleum, protecting environment, increasing yield and income, and benefiting nation and people.