Abstract:This paper analyzed the potential geographic distribution of Bactrocera tryoni (Froggatt) with compare location model of DYMEX and BIOCLIM model of DIVA-GIS. Both results of two models predicted the potential geographical distribution of B.tryoni in China was within the area of 33.3-18.2°N and 95.8-122.1°N. The high suitability areas included Hainan, Yunnan, Guangxi, Guangdong, Fujian as well as south of Guizhou and Jiangxi, east of Sichuan, west of Chongqing and some parts of Taiwan. The research also presented that the global potential geographical distribution of B.tryoni included Australia, South Asia, South America, southern coastal areas of North America, part of the Mediterranean coastal region, and the middle southern areas of Africa.