  In this letter, the Kondo magnetic effect is studied for the $XXZ$ spin chain
where the impurities are coupled to the edges of the system. The Hamiltonian of
our model can be constructed from the transfer matrix. It is exactly solvable
and the exchange constants between the bulk and the boundary impurities are
arbitrary. The finite size corrections to the ground state energy are obtained
for the magnetic impurities and the boundary condition. The specific heat and
the susceptibility contributed by the impurities are derived and the Kondo
temperature is given explicitly by the use of the Luttinger-Fermi liquid
picture and the Bethe ansatz method.
