The notion of rough set was originally proposed by Pawlak (1982) [6].Carmel Richard et al.[3] introduce a new topology
called rough topology in terms of the lower and upper approximations of Pawlak approximation space.In this paper, we have introduced
a new topology called rough topology in terms of lower and upper approximations of a rough set via multifunction.In addition we study
and investigate some properties of rough generalized closed sets in rough topological spaces via multifunction (multi rough topological
space).