  We investigate the maximal approximate flavor symmetry in the framework of
generic minimal supersymmetric standard model. We consider the low energy
effective theory of the flavor physics with all the possible operators
included. Spontaneous flavor symmetry breaking leads to the approximate flavor
symmetry in Yukawa sector and the supersymmetry breaking sector. Fermion mass
and mixing hierachies are the results of the hierachy of the flavor symmetry
breaking. It is found that in this theory it is possible to solve the flavor
changing problems. Furthermore baryogenesis of the universe can be well
described and neutron electric dipole moment is closely below it experimental
bound by assuming approximate CP violating phase $\sim 10^{-2}$ and
superpartner mass around 100 GeV.
