Soil is a complicated historical natural continuum, which gradually changes in both attributive and geographic spaces. Hence, the theoretical basis of the conventional soil survey and cartography, based on the “double crisp model” is obviously inadequate. With the rapid development of precision agriculture and the improvement of the accuracy of the environmental model, the demand for contents and accuracy of the output of soil surveys is objectively getting higher and higher. The application of fuzzy logic to soil classification and cartography is another innovative approach in pedometrology after the introduction of geo-statistics in soil classification and mapping. Though researches in this field have been reported in a number of countries, little has been done in China. In this paper, a systematic introduction is presented to the inevitability and scientific significance of the application of fuzzy logic to the study on soil continuous classification, and the advancement in the study on application of fuzzy logic to soil continuous classification and cartography at home and abroad And, shortcomings of the fuzzy-logic-based continuous soil cartography and outlook of its research are analyzed.