Abstract
I have shown the update values of running quark masses at μ = 1 GeV. We need more improved formulation on the running quark mass estimate. We have determined the quark mass matrix structure (D_u, M^^^), which is expressed only by the observable quantities, quark masses and the KM matrix parameters. Our next task is to seek for quark bases (or, U_0) by which we can obtain a beautiful description of mass matrices.
