在覆盖广义粗糙集模型理论研究基础上,进一步将对象在精确值集方面推广到了更具广泛性的Vague集,提出了基于覆盖的粗糙Vague集的新模型,并且证明了该模型的一些较好的性质.同时考虑到导致覆盖广义粗糙Vague集粗糙性的原因,提出了一种新的粗糙度用于度量该模型的不确定性程度,最后给出相关实例.“,”On basis of the research of covering rough sets, a new Rough-Vague sets model based on covering, which generalizes the accurate value sets of object to a wider range of Vague sets, is presented. Some great properties of this model are also proved. At the same time, considering the causes of uncertainty in CV, a new roughness which measures uncertainty of the model is proposed. Finally, a corresponding example is given.