The Panxi Region is located in southwest Sichuan, where there are 220>natural landslides of more than 500，000 cubic metre and 51 man-made landslides of more than 10，000 cubic metres and 687 movable debris flow ditches.The landslides of the middle and small-scale distributed in the edge of fault trough or basin are most easily transformed into huge debris flow.The.large-scale bedrock landslides distributed in valley of the strong uplifted are not easily transformed into debris flow，but the specific broken landslides transformed into large-scale debris flow will be possible. The most large-scale bedrock landslides distributed in the lump of fault differ in movability are easily transformed into middle and small-scale debris flow.The landslides differ in lithology have different influence for debris flow.The landslides of the loose pile layer and man-made are strong then the bedrock landslides of Xigeda Formation clay rock and sandy shale strata and coal strata.The landslides in limestone strata are possible to form thin debsris f low.