One of the most fundamental and important issue in wireless sensor networks（ WSNs） is whether a monitoring region can be covered by sensors efficiently. When the WSNs can’t meet coverage demand

the nodeschedule algorithm is utilized to recover it. Propose a method without calculating and sensing the overlap of model

which instead of using geometrical characteristic of network for evaluation and optimizing. Simulations results show that the proposed method can reliably achieve rapidly improve the coverage rate with less actived nodes.