  We study the Kondo effect due to the nonmagnetic impurity, e.g., Zn, in
high-T_c cuprates based on the spin-change separated state. In the optimal or
overdoped case with the Kondo screening, the residual resistivity is dominated
by the spinons while the T-dependent part determined by the holons. This gives
$\rho(T) = { {4 \hbar} /{e^2}} { { n_{imp.}} /{(1-x)}} + {{\alpha T} / x}$ (x:
hole concentration,$n_{imp.}$: impurity concentration, $\alpha$: constant ),
which is in agreement with experiments. In the underdoped region with the
pseudo spin gap, an SU(2) formulation predicts that the holon phase shift is
related to the formation of the local spin moment, and hence the residual
resistivity is given by $\rho_{res.} = { {4 \hbar} /{ e^2}} { { n_{imp.}}/{x}}
$, which is also consistent with the experiments. The magnetic impurity case,
e.g., Ni, is also discussed.
