Climate change disturbances are the main factor that affects the grassland on a large scale in long-term impact assessments. Here, the total grassland biomass had a negative relationship with the grazing, and the SOC had a positive relationship with the grazing intensity. The total grassland biomass and average SOC in QTP grassland were reduced significantly under the future climate change projection. The change in the biomass and SOC had significant differences in the spatial distribution.