Abstract: To expand the production of tropical fruit in order to make full use of natural resources is a major task for economic development in Hainan Island. The southwest part of Hainan Island lies in tropical zone, abundant in sunshine, with high temperature, middle precipitation, droughty winter and spring. Apart from this favorable climate, in the region there is a large amonnt of uncultivated land for planting fruit trees. The author suggests that the southwest of the island be the commodity production base for tropical fruits. Take the natural and socio-economic conditions, as well as domestic and international market into full account, the tropical fruits such as mango, cashew, winter water melon, banana, coco are suitable for market-oriented production now. To promote the tropical fruit productivity, it is suggested: 1.devote major efforts to foster a great deal of horticulturist. 2.construct a large quantities of nursery. 3.widely spread improved varieties and advanced techniques. 4.improve the public service in order to link up production and marketing. 5.for support the tropical fruit production, a agile and efficient administrative system be set up.