Abstract: Using typical sampling method,the plants composition of tourism disturb lots and no disturb lots of three attractions were investigated in Nawan National Forest Park. The effect and difference of interference on plant types and species diversity were analyzed. The results showed that interference caused plant species reduce at different levels of tree, shrub and grass, community structure also changed, the important value of Quercus acutissima which is the dominant species in community have added. Plant richness index, dominance index and evenness index of Nanwan Park were higher in disturb sample plots than the control, this shows that the plant diversity and the stability of forest communities reduced in some degree because of tourism interfering. Biological diversity protect and tourism activities exist a conflict relationship in some degree.