By using Geo-statistics and GIS, combining with indoor sampling point distribution and field monitoring of soil water content, the spatial variability characteristics of soil pH in Guohua demonstration area were studied. Statistical analysis showed that the average soil pH among various layers was from 6.35 to 6.57 while variation coefficient was from 9.49豫to 10.10%, which revealed variation coefficient of soil pH had weak variability. Variation coefficient of soil pH in 5 cm layer was relatively bigger, belonging to middle intense variation (10% |