Abstract: The effects of human disturbance on the tree species diversity in community forests of Gaoligong Mountains show that the human disturbances cause negative impacts on the community forest,i.e.decreasing the tree species diversity and timber volume,as well as destroying the forest community structure.The forest community structure changes by selectively cutting,and some species population are declined and threatened ultimately.Finally,some countermeasures of reducing human disturbance are put forward.