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Yuval-Anderson's scaling analysis and Affleck-Ludwig's Conformal Field Theoryapproach are applied to the $k$ channel {\em spin anisotropic} Kondo model.Detailed comparisons with the available Emery-Kivelson's Abelian Bosonizationapproaches are made. It is shown that the EK line exists for any $k$, althoughit can be mapped to free fermions only when $k=1$ or $2$. The Wilson ratio isuniversal if $k=1$ or $2$, but {\em not} universal if $k>2$. The leading lowtemperature correction to the electron resistivity is {\em not} affected by thespin anisotropy for {\em any} $k$. A new universal ratio for $k>2$ is proposedto compare with experiments.Comment: 12 pages, REVTEX, no figures, to appear in Phys. Rev. Lett

Emery-Kivelson Line and Universality of Wilson Ratio of Spin Anisotropic Kondo Model