  In the framework of the soft-wall model of AdS/QCD we calculated the $\rho$
meson nucleon coupling constant. Bulk-to boundary propagators for the free
vector and spinor fields are presented, whose boundary values correspond to
$\rho$ meson and to the nucleon respectively. The interaction Lagrangian
between these fields is written in the bulk of AdS space and includes magnetic
type interactions as well. Using the AdS/CFT correspondence from the bulk
interaction action we derived the $g_{\rho NN}$ coupling constant in the
boundary QCD. We found that the soft-wall model result for the $g_{\rho NN}$
constant is more close to empirical values than the one obtained in the
hard-wall model.
