Fecha de publicación: 01/02/2022 Fuente: Wipo Tobacco Agriculture The present invention relates to a pomegranate tree insecticide and a preparation method thereof, and belongs to the technical field of insecticides. The insecticide comprises an effective component and deionized water, the effective component comprises the following raw materials by weight: 3.1-3.5% of silicone oil, 2.5-3% of an auxiliary agent, 2.8-3% of an antioxidant additive, and the balance of tobacco leaf micro powder. The preparation method of the insecticide comprises the following steps: mixing tobacco leaf micro powder, silicone oil, an auxiliary agent and an antioxidant additive to prepare the effective component; and mixing the effective components and deionized water according to a certain proportion, so as to obtain the pomegranate tree insecticide. According to the method, the tobacco leaves are made into the tobacco leaf micro powder, the stability of effective components in the tobacco leaves is improved, the tobacco leaf powder is prepared after the tobacco leaves are smashed, the tobacco leaf powder is encapsulated through paraffin, the slow release performance and the utilization degree are improved, the dosage is reduced, and the control effect of a conventional insecticide on aphids is achieved or superior.