Abstract: The specimens of Huananaspids described in this paper were collected from Gumu district, Southeast of Yunnan by Dr. Geng Baoyin, Institute of Botany, Academia Sinica. Their descriplion covers 2 new species, 2 new genera. Besides, one new Family of Huananaspiformes is proposed. Occurred in the same bed are some yunnanolepids and some scales of crossopterygians and some plants, all of the fossils shows that the age of Posongchong Formation is from upper Gredinian to lower Siegenian.