The invention discloses a waterproof, gas-permeable and degradable mulching film. The waterproof, gas-permeable and degradable mulching film is made from raw materials including, by weight, 30-50 parts of polypropylene, 60-80 parts of modified starch, 10-20 parts of vulcanized butadiene rubber, 10-14 parts of propylene carbonate, 3-6 arts of nanometer titanium dioxide, 4-8 parts of nanometer medical stone, 3-7 parts of nanometer plant fibers, 1-5 parts of organic foaming agents, 1-4 parts of compatibilizers, 2-6 parts of antioxidants, 2-5 parts of plasticizers, 1-4 parts of lubricants, 3-8 parts of high-temperature type modified rosin resin emulsion and 2-5 parts of ultraviolet absorbents. The waterproof, gas-permeable and degradable mulching film has the advantages that the polypropyleneand the modified starch are used as the main raw materials for the waterproof, gas-permeable and degradable mulching film and are matched with the vulcanized butadiene rubber, the propylene carbonateand the high-temperature type modified rosin resin emulsion, an appropriate quantity of additives are further added into the raw materials, accordingly, the high-temperature resistance, the toughness,the waterproof performance, the gas permeability, the aging resistance, the antistatic properties and the anti-ultraviolet performance of the waterproof, gas-permeable and degradable mulching film can be greatly improved, bacteria can be effectively inhibited, and the waterproof, gas-permeable and degradable mulching film is excellent in biodegradability.