Abstract: A deforming/overset coupled hybrid moving grid generation method was developed in parallel environment to deal with complex engineering problems of both boundary deformation and relative movement. The coupled method is based on a domain decomposition strategy and distributed parallel process. The parallel implicit-hole-cutting method based on the minimum distance to wall is adopted, and two parallel donor cell searching methods have been developed. The interpolation method based on parallel radial basis function (RBF) is adopted for mesh deformation. Based on the coupled hybrid moving grids, the numerical virtual flight solver, HyperFLOW, was improved. The coupled simulation system integrates the parallel unsteady RANS solver on the deforming/overset moving grids, six degrees of freedom (6DOF) motion solver, and flight control system. Some typical applications demonstrate the capability of present method.