Abstract: It is demonstrated that the grazing systems have an effect on the growth of Stipa breviflora community．The grazing systems have a great effect on plant growth rate，and the plants grow more rapidly under a rotational grazing and forbidden grazing area than that under a continuous grazing area ．while they have no significant effects to the number of tillers under an individual plant．Plant population density is relatively steady．Plant carbohydrate content is higher under a rotational grazing area than that under a continuous grazing and forbidden grazing area in general，and the plant growth potential is the best on rotationa1 grazing area．