Different water samples were collected at Mt. Yulong Region located in lijiang city, Yunnan Province from July 22 to July 28 in 2005. The concentration of anion was measured by Dionex-3000 Ion chromatography and Dionex-600 ion chromatography, different water bodies anion composition and concentration in the study area were analyzed by applying approaches of cluster analysis sea salt iron tracer and typical backward trajectories analyze. The results show that the anion concentration of water of altitude higher than 3 180 m takes on natural state and the influence of human activities and foundation rock is less significant. However, human activities and foundation rock exert direct and decisive influence on the anion concentration of water of altitude lower than 3 180 m, with more significant effects than high altitude. Cluster analysis shows that at high altitude anion concentration and composition of water have strong consistency, the consistency of different water bodies in low altitude area anions is weak, indicating the influence factors is more complex in low altitude than high altitude. Sea salt tracer analysis indicates that the average proportion of nonmarine source of Cl- is 65%; NO3- is predominantly of continental origin; nonmarine sources proportion of SO4(2-) is 93.7%. Typical backward trajectories analyze found that the mostly vapor in the region mainly from the Indian Ocean, part of the vapors from the eastern Pacific, the west wind South Branch occasionally along Tibetan Plateau into the study area. SO4(2-) and NO3(-) which from mainly from Southeast Asia and South Asia input with the monsoon circulation.