Abstract: 【Objective】 To explore the characteristics of soil nutrients in Picea schrenkiana var.tianschanica forest under different canopy densities in the hope of providing a theoretical basis for the sustainable management of the forest. 【Methods】 Picea schrenkiana var.tianschanica forest with different canopy densities were taken as the research object, the effects of different canopy densities on Soil Nutrient Characteristics of the forest were analyzed and discussed by combining field sample investigation and indoor soil measurement and analysis. 【Results】 (1)The soil nutrients of Picea schrenkiana var.tianschanica forest with different canopy density showed medium variability and obvious surface aggregation, mainly concentrated in 0-20 cm soil layer.(2) The contents of soil organic matter, alkali hydrolyzable nitrogen, available phosphorus and total nitrogen in 0-20 cm soil layer increased with the increase of canopy density, and the contents of soil organic matter and total nitrogen increased significantly (P<0.05); The variation trend of soil nutrient content in 20-60 cm soil layer with canopy density was inconsistent and had no significant difference.In the whole soil profile, when the canopy density of Picea schrenkiana var.tianschanica forest reached 0.8, it was more conducive to the accumulation of soil nutrients.(3) There was a positive correlation between soil nutrients, and there was a very significant positive correlation between organic matter and alkali hydrolyzable nitrogen, available phosphorus and total nitrogen. 【Conclusion】 Canopy density has a significant effect on surface soil organic matter and total nitrogen of Picea schrenkiana var.tianschanica forest(P<0.05).Canopy density of 0.8 is more conducive to soil nutrient accumulation of Picea schrenkiana var.tianschanica forest.