Abstract: Changes of inner morphological texture and porosity structure of bamboo during carbonization have been investiged through heat-treatment in the range of 200-900℃,by scanning electron microscopy(SEM) and method of mercury adsorption.Generally,all bamboo carbon obtained from various heat-treated temperature(HTT) show similar morphological texture to those of the starting bamboo in terms of fibrovascular bundle and basic thin wall tissue,except obvious deformation of thin walls and fibrobundles of fibrovascular bundle from HTT of 900℃.However,from 200 to 600℃,the radius distribution of pores presents the trend to shift gradually from the wider range of 250-50 000 nm of the starting bamboo to the narrower one of 5 500-50 000 nm of bamboo carbon,most significantly in the range of 200-400℃.From 600 to 900℃,these radius distributions of pores are dominantly distributed in the range of 5500-50000 nm,with a little trend of broadening in the high HTT.Furthermore,the relationship between morphological change and carbonization mechanism of bamboo was also discussed.