Considering the characteristics of the sonobuoy and the demand for the checking search,we put forward a method for searching grid sonobuoy arrays based on the meta-grid.First,the meta-grid is constructed.Then the size of the meta-grid and the needed number of sonobuoys are studied in detail by building models.And then the number of the meta-grid,the number of sonobuoys and the searching area of the grid sonobuoy array are analyzed.In the end,the searching efficiency of the grid sonobuoy array is evaluated by simulation,and an analysis is made to the simulation results and conclusions useful for military operations are obtained.