Abstract: Here we reviewed biomass charcoals properties， the effect of biomass charcoal on soil environment and crop growth. Biomass charcoal can increase soil carbon storage capacity， improve the soil pH value， besides， it has a high surface area， high nutrient retention capacity， and high water retention capacity due to its porous structure. In a certain amount of carbon， it can increase the soil anion， cation exchange capacity， reduce nutrient loss， and change soil microbial abundance and community degradation of soil pollutants. Moreover， we reviewed the effects of biomass charcoal on crop fertilizer and fertilizer efficiency mechanism， to a certain degree， it can generally increase crop biomass and yield. Thus， adding the biomass carbon to soil can not only improve soil fertility， but also increase carbon sequestration time.

Key words: biomass charcoal, soil environment, crop growth, crop yield