A framework of traits-based theory in ecology based on the information of herbarium Jiajia Liu Xishuangbanna Tropical Botanical Garden,Chinese Academy of Science Functional traits are recommended rebuild community ecology, especially the newly proposed functional diversity which is quite important for community structure and function. However, with the shortage of functional traits data which is often the thing happened in regions with high species diversity. Here, we are using traits data measured in herbarium for all the species in a 20 ha plot in Xishuangbanna tropical rainforest, to test whether functional trait(e.g. leaf area ) are randomly distributed along the environmental gradients, and we found a significant relationship between functional traits and environmental factors. For example, subplots near the valley tend to have a high leaf area index but low wood density. The nonrandom spatial distribution pattern of functional traits supports the availability to use the information in herbarium. And we suggest that it is important to extent the function of the traditional herbarium but also take it as a fast but precise way to get the trait data.