The invention relates to a special feed for artificially feeding prodenia litura by adopting a plant-derived bacteriostatic agent. The feed is prepared from the following raw materials: wheat germ, corn flour, tomato sauce, yeast powder, Webster salt, casein, choline chloride, a tithonia diversifolia water extracting solution and the like. The preparation method comprises the following steps: removing impurities and extracting effective components to prepare a tithonia diversifolia stem water extracting solution; mixing the wheat germ, the corn flour, the tomato sauce, the yeast powder and thelike, adding water, and performing stirring, sterilizing and cooling to obtain a material 1; mixing a vitamin complex, the Webster salt, the choline chloride and the like with the tithonia diversifolia extracting solution, adding distilled water, and stirring the obtained mixture into paste to obtain a material 2; and mixing the material 1 and the material 2, and performing cooling to obtain theblocky special feed for artificially feeding prodenia litura by adopting the plant-derived bacteriostatic agent. The feed disclosed by the invention is scientific and reasonable in formula, comprehensive in nutrition, high in nutritional value and good in taste, increases the food intake rate of prodenia litura larvae, and improves the physical fitness of the prodenia litura larvae.