Soil-Plant system is the base of eco-economic production in grassland system. Livestock grazing is the most important disturbance factor in plant community succession in Qinghai -Tibet plateau. Soil traits will become considerable indices when the plant community characteristics are different by livestock grazing. There are some relationships between soil and plant community traits, in vegetation cover, vegetation diversity, soil development, soil erosion, soil degradation, and geomorphological and hydrological behaviour of alpine meadow system. The health of plant-soil system is the focus issue in natural eco-system, and plant and soil properties can reflect the healthy of the ecosystem. So in the alpine meadow system which factor is more sensitive in grazing disturbing, soil nutrient characters or plant community characters. In our studies, we first investigated 4 plots in Haibei states, Qinghai province, China, which had the same geographical unit and climatic region but in different livestock grazing intensities. We inquired details information about stocking rates, grazing time and livestock species in these plots. In the same time, soil samples were collected to the laboratory to analyze characters of soil nutrient contents (containing organism, total nitrogen, total phosphorous, total potassium, slowly release potassium, ammonium nitrogen, nitrate nitrogen, available phosphorous, available potassium, pH value, and inorganic carbon). The results showed that: the soil parent materials were in the same style in different livestock grazing intensities, it illustrated that those plots had the same pedogenic basis. The discrimination of plant community characters were come from environmental disturbing intensities, like livestock grazing. Plant community characters were differences, but soil layers' nutrient characters were consistent in the same soil layer under the different grazing intensities. In soil system, characters of soil profile transition layers were more sensitive to grazing disturbing, for example 5-10cm was a transition layer of mattic epipedon and leached layer, mattic epipedon would grow thickly when the livestock grazing intensity increasing to a certain extent, as a result, the plant community succession changed the root distribution length and density, and affected nutrient under the mattic epipedon soil layer (the leached soil layer), so 5-10cm had some transition characters between mattic epipedon and leached soil layer, it became the soil profile transition layers, those layers would more sensitive on livestock grazing intensities. It was inconformity between plant community characteristics and soil nutrient traits under different livestock pressure. Soil nutrient system were more stable than plant community system in different livestock intensities, meanwhile the different livestock intensities would not change soil profile nutrient classification, but it would more or less change the soil nutrients content in soil transition layer, and roots distributed condition could effect the soil nutrients by soil rhizosphere microbe, root exudates and so on. So in the soil-plant system, soil sub-system was more steady than plant community sub-system. In soil sub-system, soil transition layers were more sensitive than soil profile characters in livestock intensities. So plant community characters and the soil transition layers may become the discrimination index in livestock intensities in alpine meadows.