Paleosoil is an important record of climate change in geological history. Through the information of palaeosoil records, the paleoenvironmentand paleoclimatecan be reconstructed qualitatively and quantitatively, providing basis for understanding various geological events in geological history. Most of the previous studies have been carried out on palaeosoil in specific areas, but the global palaeosoil data collation, paleoclimateand paleoenvironment research are relatively few. Methods: Based on the indicator function of the dry and wet condition of paleosoilto the paleoclimate environment, we classified the paleosol (410~255 Ma) reported by previous researchers into two types: arid paleosoiland humid paleosoil according to the plant root trace, root structure and root fossil, clay minerals and the structure of paleosoil. Results: Paleoclimate compares the dry and wet characteristics of paleosoils with other climate-sensitive sediments, Compared with typical sensitivity sediments, the arid and humid paleosoil distributions are consitent with calcareous tuberculosis (evaporite), kaolinite (coal and bauxite), respectively. The arid paleosoilis mainly distributed in the middle and low latitude arid area of late Paleozoic. Humidpaleosoils are mainly distributed in the late Paleozoic near the equator and mid-latitude moist regions. Conclusions: Based on the above analysis, it is concluded that the dry and wet characteristics of paleosoil can be used as a new climate sensitive index to indicate the paleoclimate environment, and then as a strong basis for the division of climatic zones.