Locusts can eat leaves, tender stems, flower buds and tender fruits of wheat, rice, millet, corn, beans, tobacco, reeds, vegetables, fruit trees, trees and weeds. And bite the leaves into notches or holes, which can eat all or all of the crops when it happens, causing serious economic losses.

Locust is a herbivore, and its supplementary nutrition in adult stage is vigorous, accounting for more than 75% of its total food intake in its life. They use chewing mouthparts to bite the leaves and buds of plants into notches and holes, and in severe cases, they will eat large areas of leaves and buds of plants, causing huge economic losses to agriculture, forestry and animal husbandry.