Abstract: Statics of plant flora between Baiyun Mountain,Lishui,Zhejiang Province and neighboring areas show it belongs to the East China plant flora.Through the comparisons of similarity coefficients which about dominant family,genera and species between Baiyun Mountain and neighboring areas,it is proved that Baiyun Mountain is closer to Jiulong Mountain,Gutian Mountain,Tianmu Mountain,Fengyang Mountain,but it also belongs to the same natural system of Tianmu Mt.-Lushan Mt.-Huangshan Mt.