The use of ion-exchange resins for the treatment of radioactive wastes has many advantages, but thes eare rather expensive as compared with the Korean vermiculite. The Korean vermiculite has slightly different chemical constituents from the ones produced in other countries, and its physical properties might be applicable to the management of radioactive waste in a small nuclear installation. The deconta- minating effect of Korean vermiculite for the low-level radioactive liquid was investigated. 106Ru, 90Sr, and 137Cs were utilized for the exgeriments. The removal rates by Korean vermiculite were calculated for 106Ru, 90Sr and 137Cs and the removal rates increased as the weight of vermiculite in the exchange column increased. The decontaminating constants, Kd, of the Korean vermiculite for 106Ru, 90Sr and 137Cs were 2. 7, 69. 3 and 263 ml/g respectively. Through the results of experiments, the application of Korean vermiculite column to the treatment of low-level radioactive waste is quite feasible.