How to get high-efficient data routing for the limited energy resource networks is one of the hot spot in the study of wireless sensor networks（ WSNs）. Ant colony optimization（ ACO） algorithm

a swarm intelligencebased optimization technique

is widely used in network routing. Present a WSNs ACO routing algorithm

which can maintain network lifetime to be longest

while discovering the shortest paths from source nodes to base station node; multi-path data transmission can also provide high-efficient reliable network operations

while considering energy levels of nodes simultaneously. Simulation results show that this proposed algorithm prolongs lifetime of WSNs and fast and energy-efficient routing of WSNs in communication process is realized.