Abstract: The experiment was conducted to study the leaf C,N,P stoichiometric characteristics of Cupressus funebris plantations in Sichuan Province and their responses to site change and age group for understanding theleaf nutrient distribution patterns of C. funebris in different age groups and site types. In order to determine theeffects of site and age group on the leaf stoichiometric characteristics of C. funebris plantations,70 standardplots were selected for the site classification in the main distribution areas of C. funebris plantations. Leaves from different age groups（young stand,half-mature stand,and near mature stand）of C. funebris were collected,andthe C,N,P contents of leaf were measured respectively. The plots were classified into 2 site type districts,4 site type groups,8 site type subgroups and 17 site types. The average leaf C,N,P contents of C. funebris inSichuan were（550.55 ± 18.08）g·kg-1,（9.39 ± 0.20）g·kg-1,（0.95 ± 0.12）g·kg-1,and the C∶N ratio,C∶Pratio,N∶P ratio of which were 58.70 ± 3.04,583.68 ± 44.59,9.93 ± 0.37,respectively. Leaf C,N,P contentsand C∶N,C∶P,N∶P ratios were all affected by site type and age group significantly（P＜0.05）. Within the sameage group,the leaf C content,C∶N ratio and C∶P ratio of C. funebris in the mountainous site type district weresignificantly higher than those in the hill site type district;in the acid purple soil site type group weresignificantly higher than those in the calcareous purple soil site type group in each district;in the lower slopesite type subgroup were significantly higher than those in the middle and upper slope site type subgroup and thetop slope site type subgroup in each group of hill site type district;in the thin soil site type of hill site typedistrict were significantly higher than those in the medium soil site type;in the sunny slope site type subgroupwere significantly higher than those in the shady slope site type subgroup in each group of mountainous site typedistrict;and in the groove site type of mountainous site type district were significantly higher than those in theslope and ridge site type,however,the leaf N and P contents of C. funebris showed the opposite trends. Withinthe same site type,the leaf C content,C∶N ratio and C∶P ratio increased continuously,and the N and Pcontents decreased continuously from the young stand to the near mature stand. The growth of C. funebris plantations may be restricted by N and more obvious in the early growth stage. In summary,we suggested tocultivate the C. funebris plantations in the site conditions such as the combination of"acid purple soil in grooveon sunny slope of mountain"or"thin acid purple soil on lower slope of hill",and apply N fertilizer in earlygrowth stage to alleviate the possible nutritional restrictions.