Quercus alienavar. acuteserrata forest is one of the most important vegetation types of Qinling mountain. The characteristics of it in Xunhe river basin on the south side of Qinling mountain, such as flora,spectrum of life form, community structure, community types and progress of successionare studied. Quercus alienavar. acuteserrata forest in this region should be protected and ratio nalutilized according to its environmental conditions and characteri stics.