步甲俗称步行虫,是农林业害虫的重要捕食天敌.成虫和幼虫主要吸食捕获物的体液及脂肪,特别喜食鳞翅目幼虫、蛹,亦取食蝼蛄、金龟子、象鼻虫幼虫、孵及其他软体动物.有些种群或种类,如蝼步甲、婪步甲等在生活史的某一阶段偏食植物的花、幼苗或种子,成为农业上的害虫. Stepper, commonly known as pest, is an important natural predator of pests in agriculture and forestry, and adults and larvae mainly inhabit the body fluids and fats of the captured animals, especially lepidopteran larvae and pupae. They also eat larvae, beetles and weevil larvae. And other mollusks.Some populations or species, such as carapace, greedy steppe, etc., eclipse the flowers, seedlings or seeds of plants at some stage in their life history and become agricultural pests.