Abstract: This paper puts forward some concepts of rough information matrix，information granulation matrix，rough granulation matrix，and presents its structure characteristics，granulation properties.Using the properties of rough information matrix，this paper discusses its properties and computation rules as well as the relation theorems between rough sets and S-rough sets.In addition，this paper gives some theorems on rough information matrix and its rough granulation matrix.Rough information matrix is not only the new theoretical tools of studying rough system structure characteristics but also a new research direction of studying rough system theory and application.

Key words: rough information matrix, S-rough information matrix, rough granulation matrix

摘要： 提出了粗信息矩阵、信息粒度矩阵、粗粒度矩阵的概念，给出了粗信息矩阵的结构及粒度特征；讨论了粗信息矩阵、粗粒度矩阵的性质及运算法则。给出粗信息矩阵与粗集、S-粗集的关系定理、粗信息矩阵与其粗粒度矩阵的关系定理，粗信息矩阵不仅是研究粗系统结构特征的新理论工具，而且是粗系统理论研究与应用研究又一个新的研究方向。

关键词: 粗信息矩阵, S-粗信息矩阵, 粗粒度矩阵