Sediments of the Moravian, Javoříčko and Hranice Karsts were palynologically investigated. They were of Holocene, Pleistocene and Miocene ages. Palynological studies enable paleoclimatical, paleogeographical and stratigraphical conclusions. The palynological studies in caves bring about the transport problems of the plant rests from their original positions on the cave surface. This fact can cause the mixing of different ages components as well as the selection and secondary accumulation of differently resistent palynomorphs.