Abstract Bioremediation had been shown to be a powerful system for heavy metal pollution cleanup and prevention. Characterization ofthe cadmium (Cd)-resistant bacteria isolated from silk dyed water were performed in this research. I found that all 14 isolated bacteria have a toxicity tolerant of tolerate toxic CdCl2 concentrations at 1,500 μM. Interestingly, the Cd binding capacity of all isolated bacteria was very high, ranging from 2.61 to 6.52 log [Cd(atom)]/cell when grown in the presence of 500 μM CdCl2. Furthermore, the stability of Cd-bacteria complex of all isolated bacteria was effected by 1 mM EDTA. When grown in the presence of 500 μM CdCl2, 3 isolates of Cd-resistant bacteria, including BRU03, BRU07,and BRU11 increasingly produced inorganic sulfide (1X to 3X). These results suggested that these Cd-resistant bacteria have potential ability to precipitate a toxic soluble CdCl2 as non toxic insoluble CdS.