  We report an implementation of a multigrid solver for the Clover fermion on
supercomputer Fugaku, which uses A64FX CPU with Arm architecture. On Fugaku, a
highly optimized implementation of BiCGStab solver with domain decomposed
preconditioner for the Clover fermion, called QCD Wide SIMD library (QWS), is
available. We use the preconditioner in QWS as a smoother of the multigrid
solver. Our implementation shows reasonably good scaling and performance. The
code is developed by using Bridge++ code framework and its extension.
