One of the main uses of wireless sensor networks（ WSNs） is data acquisition. Large-scale sensor networks are prone to load imbalance in nodes when collecting and reclaiming data

which leads to premature death of heavy load nodes. In order to prolong the survival time of the sensor network

propose a clustering routing protocol based on virtual gravity（ CRPVG）. The protocol chooses appropriate nodes as cluster head

and according to size of the virtual gravity of cluster head and normal nodes for clustering

send collected data packets to the base station nodes through multiple transmission between cluster head nodes. The experimental results show that the proposed clustering routing protocol can play good role in energy balance and prolong the survival time of the network.