Abstract: To protect and utilize Chimonobambusa angustifolia in Meitan County of Guizhou Province, its resources were surveyed through designing survey method. The results showed that C. angustifolia had 469 patches in Meitan, grew in the evergreen broad-leaved forest and evergreen and deciduous broad-leaved mixed forest, and distributed in karst mountainous areas, the growth area was 631.5 hm2(46.02%) and the degradation area was 740.6 hm2(53.98%). The results showed that the reason for the degradation of C. angustifolia forest was the comprehensive effect of the site factor’s suitability selection and the community environmental factors’ adaptive selection, and mainly appeared as being unsuitable for barren soil and altitude extreme transition zone climate, unsuitable for the community overtop canopy density of 0.70 to 0.10, and unable to bear the excessive cutting of bamboo and bamboo shoots, while other factors caused local damage. Therefore, C. angustifolia degeneration control measures are suggested as controlling the canopy density of tree upper layers to 0.20- 0.50; rationalizing the density of bamboo plantation and bamboo age structure through thinning or replanting; improving the mountainous bamboo forests operating conditions and guiding farmers to cultivate and protect it of their own will; and converting cultivated land into bamboo forests to increase the area of C. angustifolia.