This paper studies the relationship of landslides and collapses to rockproperties and structural characteristics of slope (structural types of rockbody, structural shapes of slope profile, shapes of slope, and angles ofslope), and sums up the laws of development of landslides and collapsesin the reservior area of the Three Gorges project of the Yangtze Riverfrom semi-quantitative point. The laws supply an important basis forslope stability evaluation and the prediction of distructures of the otherandslides and collapses.