Tylototriton shanjing is a national protected species(Class Ⅱ) in China.In this paper,the microstructure of the adult skin of this species was observed.The results showed that the thickness of skin and the distribution of capillaries,pigment,and glands were different in the whole body.The skin of the head and back was thicker than that of the abdomen.Dermal melanocytes shallowly scattered mainly on the abdomen part and the dorsal part where there were no warts.Mucous and granular glands were rich,but they distributed unevenly.Under the head boney ridges and the warts of dorsal skin there were many large granular glands,which were full of secretions.Under epidermal cells,glands were protuberant,and in this part the layers of the epidermal cells were decreased to form an effective channel.Moreover,compared with the other amphibians,the skin structure of T.shanjing indicated its adaption to live in the moisture mountain areas.