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Taking typical area of the Peacock River Basin as the study area, apparent electrical conductivity of soil was induced by using electromagnetic technology, and thus layered soil salinity interpreting models were built up. 3-D soil salt distribution was characterized by using 3-D ordinary Kriging method. The profile soil salt information was presented by different operation modes. The layered salinity interpreting models showed good accuracy. Soil salt distributions of different zones in this area were significantly different. Most of soil in study area belonged to moderate salinity, and some local areas were severe saline soil. Thus, the effective countermeasures should be taken to prevent and control soil salinization in this region.