Location-based multicast protocol for mobile ad hoc networks is proposed in this paper. A network is divided into grids according to geographical location information and the grid network is divided into a high-channel subnetwork and a low-channel subnetwork according to labels of grids, where the destination set is divided into subsets according to its source node. Then destination nodes are partitioned into groups by using location information, the multicast routing is done in label order for each group. The proposed protocol does not require the maintenance of a distribution structure(e.g., a tree or a mesh). A forwarding node only uses information about positions of its destinations and its own neighbors to determine next hops that packet should be forwarded to and is thus very well suited for highly dynamic networks. Proposed protocol is scalable.