The figure and fiber morphology of various Phyllostachys heterocycla particles and debris was measured and was compared with its bamboo raw material.It was concluded that the sizes of bamboo debris were ueven and the percents of debris with less than 60 holes were 80.84% and the percents of debris with more than 80 and 120 holes each were about 10%;fiber lengths were damaged and the widths were still intact;and fiber lengths gradually became short with the granularity decreased.