Quercus wutaishanica is one of Huang Long Mountains forest region main building group of species, 16 pieces of sample area were selected by typical sampling method, age class,static life table, survivorship curve, height class and crown width class, researching age class,static life table, survivorship curve, height class and crown width class were drew to survey the change rule in different crown density(crown density is 0.6、0.7、0.8 and 0.9) under different slope(shady slope and sunny slope). The results showed that Q. wutaishanica saplings respectively made the total individual number 57%、64%、36%、47% in different crown densities(crown density is 0.6、0.7、0.8 and 0.9), age class, static life table and survivorship curve indicate the Q. wutaishanica seedlings in four different crown densities, the Q. wutaishanica seedlings made the maximum proportion, and then the adult trees, saplings made the least proportion. The general performance of population age class, static life table, survivorship curve, height class and crown width class of Q. wutaishanica showed that Q. wutaishanica population in crown density of 0.7 was superior to the crown density of 0.6, 0.8 and 0.9. Saplings and small trees were the update bottleneck stage of Q. wutaishanica.The survivorship curve of Q. wutaishanica was belong to R.PearlⅢ type, fluctuated least when the crown density was 0.7. The proportion of seedlings, saplings and small trees in sunny slope was higher than shady slope, while the proportion of mature stand in sunny slope was less than shady slope. Except the height class a, height classes of sunny slope were more concentrated in the height class c, d, and e, while height classes of shady slope were more concentrated in the height class d, e, and f. In sunny slope, Crown breadth class distributed under 5m, while crown breadth of shady slope mainly distributed under 3.5m. In both the sunny slope and shady slope, crown density of 0.7 is more suitable for Q. wutaishanica to update and grow, which can be used as ideal conditions of tending thinning in Northwest of China.