Abstract: From the perspective of global optimization,the reason for unstable solutions for industrial3-D datum transformation are analyzed.A uniquely determined global optimization is obtained by theoptimal initial values and local optimal method.In applications for industrial station-moving measure-ments with common points,transformation parameters can be calculated more stablely by this meth-od.Other low signal-to-noise ratio adjustment problems exhibiting instablity can refer to the methodpresented in this paper for a solution.