Abstract: Urban environment geology problem is getting serious when our country is now in the historical phase of urbanizing with high speed. a lot of factors such as using original vegetation and soil into urban building, sclerous soil surface and building density increasing rapidly result in both the surface current's runoff and flood peak runoff increase, while the flood peak appears early than usually time,all these make it more likely to engender urban flood domino effect. The factors such as ground water exploring results in ground sedimentation both arguments in area and increases in amount, as well as form a lot of sedimentation centers. ground sedimentation can bring a series of harm, for example, it can debases altitude and brings urban seeper after rain,as well as destroys urban underground pipeline net .now Penetrated pavement will be applied to prevent and abate urban environment geology disaster and ecological environment deterioration form the point of ecological urban building, it aims at solve urban security in particular urban environment geology security problem, it'll service for prevent urban disaster,urban ecological building and urban continuable development.