Abstract: This paper takes average annual temperature as an important index to predict the suitable establishment areas of Radopholus similis and its invasive risk to China using Arcview GIS's function of spatial interpolating analysis, and takes host influence on the distribution of Radopholus similis into account using Arcview GIS's superposition function. The results show that potential suitable establishment areas includes most areas of south of Changjiang River and some areas of Hubei, Henan, Shanxi, Jiangshu, Shanghai and Chongqing, among which Hainan and some areas of Guangdong, Yunnan maybe the outbreak areas.