In order to reveal the difference of functional traits of ants and study on ant's functional diversity, the functional traits of 17 ant species were measured. The results were as follows: (1) There was difference of functional traits in terms of resource utilization among ant species. Pachycondyla rufipes (Jerdon) was the largest, and Technomyrmex albipes (Smith) was the smallest one in the aspect of food consumption amount. Technomyrmex bicolor Emery and Iridomyrmex anceps (Roger), Camponotus nicobarensis (Mayr) and Pachycondyla zhengi Xu, Gnamptogenys bicolor (Emery) and Aphaenogaster beccarii Emery showed similarity in food consumption amount. (2) In the aspect of mode of resource utilization, Oecophylla smaragdina (Fabricius) has the longest relative legs, but their functions were prior to nesting, the 2 species of Aphaenogaster, 3 species of Camponotus and the Iridomyrmex anceps (Roger) could run fast to acquire resource, the rest 10 ant species had better resource utilization abilities in complex habitat. The overall trend showed that the species from the same family and genus had the similar traits in terms of food consumption amount and mode of resource utilization than those from different family or genus; the reason of difference was mainly due to the significantly different body sizes regardless the family or genus.