Abstract: In order to understand the difference of ramie cultivars with different fineness in tolerance to heavy metal cadmium, the tolerance of 12 ramie cultivars under different cadmium stress was studied by soil cultivation pot experiment. Ramies cutting seedlings (60 days) under same growth condition were transplanted to soils treated with 0, 25, 75, 150 mg/kg Cd, respectively. The Cd tolerance experiment lasted for 1 year.The results showed that the comprehensive tolerance index of Cd for these 12 investigated ramies under a Cd stress at 25 mg/kg was range from 0.80~1.18, with the best and worst Cd tolerance shown by “Zhongzhu 1# (medium fineness) ” and “Dazhu Huangbaima(low fineness)”, respectively; and under a Cd stress at 75 mg/kg was range from 0.09~0.77, with the best and worst Cd tolerance shown by “Xiangzhu 3# (medium fineness) ” and “Dazhu Huangbaima(low fineness)”, respectively; and under a Cd stress at 150 mg/kg was range from 0.32~0.54, with the best and worst Cd tolerance shown by “Houpizhong 1# (high fineness) ” and “Dazhu Huangbaima(low fineness)”,respectively. Our results indicating that ramie has good tolerance to heavy metal Cd, with greater Cd tolerance of medium and high fineness cultivars than that of low fineness. The concentration of 75 mg/kg (Cd/soil) is the threshold of cultivars named “Dazhu Huangbaima”,“Ningxiang Chongtianpao”, “Liuyang Dayeqing”, “Lingshui Qingdingjiama”,”Chuanzhu 8#”, “Zhongzhu 1#”, “Wugang Hongpima” and “Xiangsi 1#”; and 150 mg/kg (Cd/soil) is the threshold of cultivars named “Xiangzhu 3#”, ”Duobeiti 1#”, “Zixing Ma” and ”Houpizhong 1#”. Key words: ramie; cultivar; fiber fineness; cadmium tolerance; threshold