Three main patterns and models of landslide process development (flow, sliding, shear) of change are distinguished, that modeling the litho-dynamic of landslide-dangerous slopes in clays of Neogene Age in the region of Carpathians of Poland and Ukraine. It is set that for the shear landslides the middle width is 11.5 m, maximal width is 40 m, middle width on edge is 23.5 m, middle extent of slope is 380 m, middle width on front is 1000 m and slope angle of slide surface, α is not exceed 15° except the area of edge. Consideration is being given to the use of accelerograms of real earthquakes for calculation of strain-stress state of landslide-prone slopes of Chernovtsy city by using PLAXIS software. As a result of numeral modeling of the stress-strain state of shear landslides by direct dynamic method on the basis of software PLAXIS there was found out: the seismic events with intensity up to 6 on a Medvedev scale can considerably to worsen the soil behavior in the slide zone and to affect on slope firmness and value of shear pressure.