Abstract: This article is a general study on the distribution, origin, change, biological characteristics, law of growth and development, community type, structure, regeneration and succession of Keteleeiria davidiana in Dangyong.A large area of pure and mixed forest in the hilly area at the low altitude of 100—393 m is reported.Keteleeiria davidiana in hilly area in Dangyang was originated 60 million years ago. Without the damage of Quaternary glacier and little disturbance by human in history, it survives until today.The properties of Keteleeiria davidiana is very similar to that of Pinus massoniana. It has easy propagation, good adaptability, and long life. It can grow into big trees. Single tree growth speed are not lower than that of Pinus massoniana. The species has strong germination and regeneration ability, thus several harvests are possible once planted.It is proposed to use the species as an improved timber source fnlarge-scale artificial forests in its adaptable region. However, the specis in now on the verge of extinction, we propose to protect it as grade 3 protectd species.