Abstract: This paper reviews the history of controlling the locust, Locust migratoria manilensis,in China this century and proposes new assumptions on how to sustainably manage the insect pest. In recent years,biological control of the locust has succeeded to some extent and this strategy had developed in certain areas of our country. In order to prevent or delay development of the locust from solitary phase to gregarious one the biological agents such as Nosema locustae should be used mainly.When high density occurs the IGRs or other chemicals and N.locustae must be used together at certain proportion to reduce the population rapidly,and the N.locustae disease may be epidemic in depressed locust populations in this case.The semiochemicals of locusts should be also studied and developed as one of potential measures for controlling the insect pest.

Key words: locusts, biological control, sustainable pest management strategies, population densities, behavior control