  We investigate the parity-violating $\pi NN$ Yukawa coupling constant
$h^1_{\pi NN}$ within the framework of the SU(2) chiral quark-soliton model,
based on the $\Delta S=0$ effective weak Lagrangian derived within the same
framework. We find that the parity-violating $\pi NN$ coupling constant is
about $1\times10^{-8}$ at the scale of 1 GeV. The results of $h_{\pi NN}^1$
turn out to be sensitive to the Wilson coefficient. We discuss how the gluonic
renormalization supresses the parity-violating $\pi NN$ coupling constant.
