Aiming at issues of limited energy resources and interrupted communications of nodes in wireless sensor networks（ WSNs）

a multiple ferries multicast routing algorithm（ MFMA） is proposed. The algorithm uses communications between regional ferry node and shared node between regions to achieve network connectivity

and on the basis of this

propose construction method of energy priority level of region and based on priority level for energy-efficient multicast tree. Simulation result shows MFMA can increase data pay rate of network and reduce energy consumption.