Based on soil investigation data from Yucheng City in Shandong Province in 1980, using GIS (Geographic Information System) and Dempster-Shafer evidence theory, the probability of potential soil salinization affected by many factors was explored. In this paper, the authors make the best use of J model in fuzzy sets and Dempster-Shafer-Weight-of-Evidence which carries out combination of factors affecting soil salinization, in order to estimate the reliability of soil salinization, and expert knowl...