The separate situation of research has area coverage or target coverage in wireless sensor networks. Based on
directional sensing model,the algorithm used the virtual potential field to make the sensor nodes shift positions and
change directions automatically in monitoring area. A multiple coverage on multiple targets is mainly in the quality
of coverage and network service system. Coverage for multi-objective design is a multi-objective genetic algorithms
to solve multi-objective optimization problem. Thinning algorithm can be found in the border region of the demand
point for sparse areas which needs to make the search more uniform distribution of the solution. The operator
introduces the compound of crossing two operators and a uniform mixing of the single point to make an analog
binary search function be weak cross defects, and gives proof of the convergence of the algorithm by simulation to
verify the effectiveness of the algorithm.