To investigate woodland soil formation characteristics and the classification attribution in the Chinese Soil Taxonomy (CST), 9 woodland soil profiles were selected in Loess Area of the eastern region of Qinghai Province. Based on the principle and methodologies of Keys to Chinese Soil Taxonomy (Third Edition), the diagnostic horizons and diagnostic characteristics were identified, and further reference to the Chinese Soil Genetic Classification, USA Soil Taxonomy and World Reference Base for Soil Resources, respectively. The results showed that woodland soils studied were sorted into 7 subgroups including Lithic Ustic-Orthic Primosols, Typic Hapli-Ustic Isohumosols, Mottlic Hapli-Udic Isohumosols, Typic Calci-Ustic Isohumosols, Calcic Hapli-Ustic Cambosols, Typic Molli-Ustic Cambosols and Typic Hapli-Ustic Cambosols. In which 3 Gray-cinnamon soils profiles were classified into 2 orders, 2 suborders and 2 groups; the 4 Castanozems soils profiles were classified into 2 orders, 2 suborders and 2 groups in CST. The distribution characteristics of soil humus horizon are paid attention in CST and more apply to classification of the natural forest soil compared to USA Soil Taxonomy and World Reference Base for Soil Resources, meanwhile, it can also reduce the phenomena of different soils with the same soil name especially for Castanozems.