To clarify the classification of paddy soils in Karst areas of Guangxi in Chinese Soil Taxonomy, 20 typical soil profiles of paddy soil with different parent materials were selected and classified according to Chinese Soil Taxonomy (3^rd ed) by field observation, stratified sampling and analysis. Results showed that there was obvious recalcification in most of the paddy soils. The selected profiles were sorted into Anthrosols in order; Stagnic Anthrosols in suborder; Gleyic, Fe-accumulic and Hapli-Stagnic Anthrosol in group; Recalcatic, Fe-accumulic and Typic Gleyi-Stagnic Anthrosols, Recalcatic and Typic Fe-accumulic-Stagnic Anthrosols, Recalcatic and Typic Hapli-Stagnic Anthrosols in subgroup. They were classified as 17 soil families and 20 soil series. In consideration of that CaCO₃ equivalent content is lower in the cultivated layer of Stagnic Anthrosols in Guangxi than that in the plow pan, it is suggested to revise "the surface layer" of "topsoil" in the current classification of subgroup of Stagnic Anthrosols as Anthrostagnic epipedon (cultivated layer or plow pan) to prevent the misjudgment of subgroup. Meanwhile, it is suggested to add a subgroup of Recalcatic Fe-accumulic-Stagnic Anthrosols in Chinese Soil Taxonomy due to some of the artificial soils in Guangxi also have the characteristics of calcic evidence.