The disposal of the nuclear waste has become urgent. Its purpose is to isolate the wastes from hnmanbeing. The most liable method now is the geological disposal, that is, to explore a closed and security natural burrier. For this reason, the study of the rocks is very important. Different countries has selected different rocks. No matter what kind of rocks to choose, each utilizes certain characteristics of the rocks. Amony those rocks, the halite, clay and granite are most commonly selected.