Abstract: There are two phases for locusts, solitary and gregarious. The plague of locusts is usually led by the gregarious locusts. Many studies have been devoted to find the key factor regulating phase transformation in order to control the plague of locusts in recent years. This paper summarizes the physiological mechanism of locust phase polymorphisms from the aspect of neuroendocrine and reviews the main effects and mechanisms of juvenile hormones, ecdysteroids and ［His7］-corazonin on locust phase polymorphism in detail.

Key words: Locust phase polymorphism, solitary phase, gregarious phase, juvenile hormones, ecdysteroids, [His7]-corazonin