The Paleozoic Era is the earliest and longest geologic era of the Phanerozoic. A series of major events of tectonics, life evolutions and climate changes happened during the Paleozoic. High-resolution geological time scale of the stratigraphy plays a critical role in understanding the evolution of the Earth in the Paleozoic. Based on identifying and studying the Milankovitch cycles in sedimentary strata resulted from the orbital force of the Earth,a continuous ultra-high resolution(0.02-0.4 Ma) astronomical time scale(ATS) can be constructed and then applied to calibrate the international geological time scale. The calibration of the Cenozoic-Mesozoic eras of the international geological time scale by applying the ATS has been basically completed,but that of the Paleozoic has not been conducted yet. Recently,calibrated evidences of the Milankovitch cycles,constrained by reliable high-precision radiometric ages,in the Paleozoic strata have been obtained for trying to establish the ATS,indicating that there is a good potential for the establishment of the Paleozoic ATS,which is the frontier for studying the Paleozoic cyclostratigraphy in future. This paper is going to briefly introduce the basic theory of cyclostratigraphy,systematically review achievements and progresses of researches on the Paleozoic cyclostratigraphy,and propose prospective views for the research in future.