Abstract: Taking Simmental cattle grazed in the typical steppe of Stipa krylovii Roshev as the research object, the effects of different short-term grazing intensities （non-grazing, light-grazing, moderate-grazing and heavy-grazing）on the soil organic carbon and pH value in the typical steppe of Inner Mongolia were analyzed and the suitable stocking rate of the typical steppe was discussed, in order to alleviate the grassland soil degradation and enhance the sustained utilization of grassland. The results showed that the content of organic carbon in 0-20 cm soil layer decreased with the increase of grazing intensities and there was significant difference under the heavy-grazing conditions. The organic carbon content in 20-30 cm soil layer was heavy-grazing〉moderate-grazing〉non-grazing〉light-grazing and there was significant difference between the heavy-grazing and light-grazing. The soil pH value significantly increased as the grazing intensities decreased. The organic carbon content in soil decreased as the soil depth increased and the order of pH value was 10-20 cm〉20-30 cm〉0-10 cm in the vertical distribution. Therefore it was essential for preventing the grassland degradation to find out the appropriate grazing intensity and sustain the balance of soil nutrients.