The beet nightshade is an omnivorous pest. It has been recorded that the host species of more than 30 families nearly 200 kinds. The main crops are grain, oilseeds, fruit trees, seedlings, cotton, tobacco, vegetables, but mainly vegetables, host species are pepper, cabbage, kale, garlic, cabbage, apricot and more than 30 kinds. Beet moth larvae to feed on plant leaves, the first hatch larvae cluster to harm the back of the leaf, spit silk nets, feeding on leaves in the net, leaving the epidermis, the formation of transparent small "skylight". After the third instar, the leaves will be eaten into holes or notches. In severe cases, the leaves are eaten into a net, leaving only the leaf veins and petioles, resulting in the death of vegetable seedlings, causing the lack of seedlings and broken rows to the destruction of seeds. Larvae of more than three ages can bore a variety of vegetables, flower vessels, flower stems, bulbs, shoots or fruits, fecal residues in the fruit caused by pollution, loss of food value.