The invention discloses the technical field of disease and pest control, and particularly discloses a novel biological material for plant disease and pest control. The novel biological material for plant disease and pest control comprises 10-12 parts of methyl formate, 40-42 parts of methyl carbamate, 2 parts of a preservative, 12-14 parts of mother powder, 1-1.2 parts of a defoaming agent, 3-3.2parts of an antifreezing agent and the balance of a solvent, wherein the preservative is a mixed material of potassium sorbate, sodium diacetate and dehydroacetic acid, and the mass ratio of the potassium sorbate, the sodium diacetate and the dehydroacetic acid is 1:1:1.2; the mother powder is diethylaminoethanol acetate; the defoaming agent comprises emulsified silicone oil, a high-alcohol fattyacid ester complex and polyoxyethylene polyoxypropylene pentaerythritol ether, and the mass proportions of the emulsified silicone oil, the high-alcohol fatty acid ester complex and the polyoxyethylene polyoxypropylene pentaerythritol ether are equal. Through addition of the methyl formate, the fragrance of the novel biological material for the plant disease and pest control is enhanced to improvethe attention of pests, so that the pests take the initiative to eat the novel biological material for the plant disease and pest control, and thus the novel biological material for the plant diseaseand pest control has a relatively good long-lasting pesticide effect.