Abstract: There are 134 large-scale accumulations of the collapsed ladnslide along the bank slope of the Three-Gorge reservoir.Their formation related to the depp-dissection of the mainstream of the Changjiang River in the Three-Gorge area.The steep bank-slopes cracked and the fissured rocks collapsed.The collapsing and landslide lead to power release and make the bank-slope tend to be stable.After the Three-Gorge reservoir will have completed,the vermicular fissure rocks would be most dangerous.So we should pay attention to the concretion of some slippage-surface and clear up unstable rocks on the bank-slope.