Abstract: An optimization method of wireless sensor networks coverage based on quantum-behaved particle swarm optimization(QPSO) is proposed in this paper.The aggregation characteristic of every particle in the quantum space is unique,so the algorithm can search throughout the entire feasible region.Thus the QPSO.of which global search ability is much better than PSO.can avoid the disadvantages of being easily trapped into a local extremum. Simulation results show that the proposed algorithm is superior to particle swarm optimization in coverage optimization.