The invention discloses a rodenticide and belongs to the technical field of insect damage removal. The invention provides the rodenticide which is low in cost, high in palatability, easy to store and significant in rat killing effect. The rodenticide comprises 10-80 parts by weight of base material, 0.002-0.5 part by weight rat killing active ingredient and 2-40 parts by weight auxiliary material. The base material is prepared by solid-liquid separation, breaking, sorting, slurrying, dryness and grinding of kitchen waste into powder; a protein content in the base material powder is greater than or equal to 20%; a starch content is greater than or equal to 45%; an oil content is less than 7%; and a water content is less than 10%. The rat killing active ingredient is a safe second generation rat killing active ingredient. The auxiliary material comprises an excipient, an adhesive, a water absorber, a surfactant, a preservative, a colorant, a corrigent and a solvent. The rodenticide is high in palatability, suitable for long-time rat destruction, good in rat killing effect and low in cost; and a novel approach is provided for comprehensive utilization of the kitchen waste.