The morphology of the genus Pareas is highly conservative, and the morphological differences between different species are subtle. The application of the integrative taxonomic approach centered on molecular systematics has made important contributions to the solution of the classification problems of this group. In the past eight years, 9 new species have been described (7 of them have been added in the last three years), and 6 synonyms have been resurrected. Based on the latest literature achievements and the investigation data over the years, this paper describes the progress of the classification of the genus Pareas, sorts out its species checklist, compiles the identification key, and clarifies the current species of the genus Pareas in China. Up to now, there are 26 species in the genus Pareas, including 18 species in China, which are distributed in the vast areas of the south. The paper also discusses the existing problems in the study and puts forward suggestions for the future work: the species diversity of the genus is highly underestimated, the sampling coverage is still insufficient, and the research method is still simple. The large-scale intensive sampling and the application of phylogenomic methods are helpful to the final solution of the phylogenetic relationship of this group.