In order to find the global optimum,it’s crucial to prospect its neighborhood of global optimum(NGO).Inspired by force balance relationship of the gravity center(GC) of a sand table,a method of prospecting NGO based on GC is presented in this paper.Firstly,space transformation technique is used such that the GC of the optimization space can be moved close to the NGO.Then,the NGO whose geometric center is the moving GC narrows down gradually.Experiment results of function test and engineering application sho...