Disclosed is a method for preparing a biopesticide preparation for preventing and controlling Solenopsis invicta, the method comprising: a. preparing a pathogenic microorganism-containing agent for controlling Solenopsis invicta, wherein the pathogenic microorganism-containing agent for controlling Solenopsis invicta contains Beauveria bassiana and sodium chloride, and the ratio of the number of Beauveria bassiana spores to the grams of sodium chloride is (1-8) × 20 billion : 4.0-7.5 g； and b. placing the pathogenic microorganism-containing agent for controlling Solenopsis invicta into a solid container, filling a liquid container with a corresponding amount of a solution, then inserting the solid holder into the liquid container, snapping a snap ring onto a bottle opening of the liquid container, then pressing a rubber gasket onto the snap ring, capping the rubber gasket and the snap ring by means of a cap, and fixing same to the bottle opening of the liquid container. The prepared biopesticide preparation for preventing and controlling Solenopsis invicta has a long storage time, is convenient to use and transport, saves time and labour, and is ready to formulate before use, and after use, same improves the agent (spore) germination environment, increases the insecticidal effect, and finally achieves the purpose of preventing and controlling Solenopsis invicta in the wild.L'invention concerne un procédé de préparation d'une préparation pesticide biologique pour la prévention et la lutte contre Solenopsis invicta, le procédé comprenant les étapes suivantes : a. préparation d'un agent contenant un microorganisme pathogène pour lutter contre Solenopsis invicta, lequel agent contient un microorganisme pathogène pour lutter contre Solenopsis invicta contient Beauveria bassiana et du chlorure de sodium, et le rapport du nombre de spores de Beauveria bassiana aux grammes de chlorure de sodium étant de (1-8) × 20 milliards : 4,0 à 7,5 g； et b. introduction de l'agent conte
