y studying the field population dynamics of oriental migratory locust in the Hainan is-land, taking a reference to the recorded data on the occurrence and harms of this species inrecent 500 years in the island, and analyzing the ecological geography evolutionary character-istics of locust occurring areas in the island in recent 100 years, a conclusion was drawn thatthe oriental migratory locust breeding area in Hainan belongs to″the tropical Savannahlocust breeding area″ The formation of the locust breed...