Distribution of silicate-dissolving bacteria in some areas of China was investigated with the culture in which feldspar powder was the sole potassium source for bacteria isolation. A total of 48 soils samples collected from surface soil layers, 0~10cm in depth, of different parts in China were examined for distribution of the bacteria. Then 148 strains of silicate-dissolving bacteria were isolated from the soil samples. Soil pH and soil nutrient contents were determined as well. Rules of the ecological distribution of the bacteria in different habitats and their capabilities to decompose K-bearing minerals were analyzed. Some efficient strains were screened out. The research findings are of great significance in protecting, exploiting and utilizing the ecological resources in China.