243 soil profiles in Hainan Island were identified and classified according to Key to Chinese Soi Taxonomy (3rd edition), and the relation between topographic-lithologic units and soil taxonomic taxa was discussed Then, based on the summarized correlation between units and taxa, the tentative draft on soil mapping units of Hainan Island according to Chinese Soil Taxonomy was drawn up and the sketch maps of soils on some selected plots were made The total of mapping units to be set up are fifty throughout the Island It was found that the procedure used in this study to compile the soil map with Chinese Soil Taxonomy system is easier to operate and more objective than the procedure which simply changed soil type name on the former soil map with Soil Genetic Classification system.