Field experiment was conducted in Xiaoleizai Watershed to study the effects of three different soil textures (loam, sandy loam and heavy loam) on the growth and biomass of S. guianensis. Reyan 5 and the fertility of soils (organic matter, organic carbon, total nitrogen and phosphorus). The results showed that the growth and biomass of aboveground and underground of S. guianensis changed slowly at seedling stage but fast at branch stage in all three soils. Loam soil performed best, the growth and biomass of aboveground part of S. guianensis and improvement of loam soil fertility were higher significantly than those of heavy loam soil. The roots of S. guianensis grew deeper in sandy soil, the growth, biomass and nodule amount of underground part of S. guianensis were higher significantly than those of clay soil. Except at seedling stage, aboveground growth and biomass of S. guianensis were higher in loam soil than sandy loam and heavy loam soils, underground growth and biomass of S. guianensis in sandy loam soil were higher than loam and heavy loam soils. Organic matter, organic carbon and total nitrogen changed greatest in loam soil, followed by heavy loam and sandy loam soils, while total phosphorus changed greatest in sandy loam and heavy loam soils, followed by loam soil. The above results suggested that loam soil, with medium levels of aeration and water and fertilizer conservation compared with sandy loam soil and heavy loam soil, is most suitable for the growth and dry matter accumulation ofS. guianensis.