Up to now 276 species have been recorded from the ant fauna of Taiwan and belong to 2 subfamily-complex, 8 subfamilies, 28 tribes and 66 genera. The family Formicidae of Taiwan was revised at subfamily-complex, subfamily and genus level. It comparise 6 subfamilies in the poneroid complex: Leptanlinae, Aenctinae, Ponerinae, Cerapachyinae, Myrmicinae and Pseudomyrmecinae, and 2 subfamilies in the formicoid complex: Formicinae and Dolichoderinae. In genus level, seven genera (Anillomyrma, Messor Recurvidris, Rhopalomastix, Lordomyrmex.Protanilla and Prenoplepis) are new recorded in the ant fauna of Taiwan. The taxonomic characters of the ant categories in Taiwan are described and illustrated in detail based on the worker. An Illustrated key is provided based on the workers of the subfamilies and genera Scientific names and Chinese common names list of ant species to Taiwan are also given.