Abstract: Quercus aquifolioides is a representative broadleaf evergreen species on the Qinghai-Tibet Plateau,which has a extensive, continuous distribution in the southeast Tibet forest region. It plays an important role on soil and water conservation of the alpine-gorge areas. The population structure, quantitative dynamics, the relationships between height and environment were studied using composition of size classes, life table, survival curve, and rank correlation analysis. The result indicated that: (1) the whole Quercus aquifolioides population took on a growing trend and the distribution of tree ages differed among plots (PAnnual rainfull>Position>Slope aspect>Slope>Altitude, the soil moisture and annual precipitation had significant impacts on the population's canopy height differentiation. In addition, the population had a wide adaptation on altitude and a weak response to the slope. The spatial water pattern significantly affected the individual growing and population development.