To understand soil carbon and nutrient pool and variation patterns under evergreen broad-leaved forest in northwest Sichuan,we chose mature forest of Cyclobalanopsis glauca Castanopsis fargesii Elaeocarpus japonicus,secondary and mature forest of Machillus pingii Alnus cremastogyne Phoeba bournei,secondary and young forest of Lithocarpus hancei Betula luminifera Eurya nitida to represent the typical evergreen broad-leaved forest types of this area.After examining soil carbon and nutrients pools,we obtained the following results and conclusions: By reasons of the differences of forest origin and ripening stage and the characteristics of plants,there was a big difference among soil carbon pools of this three inartificial forest types.Their soil carbon pools were 160.35 t/hm2,138.96 t/hm2,62.14 t/hm2 respectively and the mean was 120.48 t/hm2.The soil nutrients pools had different representations among the three forest types;However all of them were significantly impacted by forest types and their characters.There were trends of soil carbon and nutrients decreased with soil depth.The soil carbon and total nitrogen had evident representation.