Animal gelatin insecticide and preparation method thereof

The invention relates to an animal gelatin insecticide and a preparation method thereof, and the insecticide consists of two functional preparations which are combined for use. The preparation I is a prepared bone glue solution with a certain concentration, and is uniformly sprayed on the surface of a plant body to form a glue film for sticking and killing pests; the preparation II is a prepared compound proteolytic enzyme solution with a certain concentration, the compound proteolytic enzyme solution is uniformly sprayed on the surface of a plant body, and animal gelatin macromolecular protein in the preparation I is subjected to proteolysis to form micromolecular protein peptide or amino acid which is absorbed by the plant. The combined use method of the insecticide comprises the following steps: uniformly spraying the preparation I on the surface of a plant body by using a sprayer, and spraying the preparation II on the surface of the plant body sprayed with the preparation I after 48 hours of spraying of