A field experiment was conducted to understand the response of growth and non-structural carbohydrates(NSC)content of subalpine meadow plants to climate warming,nitrogen addition and human disturbance. We used open-top chamber(OTC)to simulate warming with nitrogen fertilization and weeding treatments,to analyze the growth and non-structural carbohydrates content of subalpine meadow plants in Balang Mountain,east of Qionglai Mountains in southeast margin of Tibetan Plateau(the transitional zone from Sichuan Basin to Tibetan Plateau)The results showed that:(1)the soil total phosphorus(P)and potassium (K)contents of all treatments have shown non-significant difference towards the control.Soil total nitrogen(N)content of warming+fertilization treatment has shown non-significant difference towards the control,while obviously decline of soil total nitrogen was shown in warming,fertilization,weeding, warming+ weeding,fertilization+ weeding,and warming+fertilization+ weeding treatments. (2)Warming promoted the growth of functional group of grasses and forbs but inhibited the growth of functional group of sedges.Warming enhanced the importance value of functional group of grasses but reduced the importance value of functional group of forbs.And the effect of warming on functional group of sedges'importance value was influenced by fertilization and weeding.Fertilization promoted the height growth of functional group of grasses and forbs,and promoted the growth of sedges.Weeding promoted the growth of functional group of sedges but weeding inhibited the growth of functional group of grasses and forbs.The interaction of fertilization and weeding was beneficial to functional group of grasses.Both fertilization and weeding enhanced functional group of sedges'importance value but reduced functional group of grasses'importance value.(3)Content and distribution of non-structural carbohydrates(NSC) of different species responded differently to the treatments.The non-structural carbohydrates content in Geranium strictipes showed significant correlation with species coverage,and non-structural carbohydrates content in Polygonum viviparum showed significant correlation with species height.The result indicates that both climate warming and nitrogen addition promote the growth of functional group of grasses and sedges,and cause the plants NSC changing to defend the environmental stresses.