Abstract: Community characteristics of the Pinus caribaea plantation was investigated by using the plot sampling method in Xishuangbanna.The results showed that:(1) there were 43 species of vascular plants belonging to 41 genera and 22 families in the Pinus caribaea plantation;(2)Shanon-Weiner indexes of its tree layer,shrub layer and herb layer were 2.71,1.52 and 2.69 respectively;(3) The vertical structure of the community could be divided into tree layer Ⅰ,tree layer Ⅱ,shrub layer and herb layer clearly;(4) Species richness and diversity index of tree layer and shrub layer were all lower than those of natural secondary forest,while its vertical structure was more complex as compared with the secondary forest.