Abstract: For the given water treatment,the features of the microbiological colonies before and after the addition of the 2-methylisoborneol(2-MIB) were studied,and a method for isolation of a bacterium capable of removing the 2-MIB from the water was proposed.The procedure of the method was as follows:the activated carbon,whose surface was covered by a mature microbiological membrane,was employed to continually treat the water with higher concentration of 2-MIB,and then the sample gained from the surface of the activated carbon was cultivated in the mineral salt liquid culture in which 2-MIB was the only carbon source;finally,one strain,which was identified as Pseudomonas spp.based on the data of 16S rRNA analysis,was isolated by plate streaks.