Abstract:Da Xue Mountaia of ZhenKang County is situated in 24°20′ N and 99°6′, E, the south-west part of Yunnan Province. The altitude from vally to peak is about 2000 m (1700 m to 3500 m). The evergreen broad-leaf forest is mainly located between 2000 m and 2500 m. It is well preserved, and is a kind of representive of mountain humid evergreen broad-leaf forest in subtropical region.