Abstract: In the present paper the structure characteristics of the ecological geography of the tropical savannah locust area in Hainan are systematically analyzed. It seems rational to regard that this locust area as one of the two kinds of locust breeding area proposed by Uvarov (1936), I.e., the locust area induced by deforestation, The author named it as the tropical savannah locust breeding area", which has not previously been investigated in Ghina. Gomparison has been made with the river delta type of locust breeding area of the mainland in the cause of their formation and the characteristics of the ecological geography. Suggestions in ecological reform of this new type of locust breeding area are made to conform the prudential strategy for its elimination.

Key words: Locusta migratoria manilensis, tropical savannah locust breeding area