  In this paper, we investigate the heavy quark potential in some holographic
QCD models. The calculation relies on a modified renormalization scheme
mentioned in a previous work of Albacete et al. After studying the heavy quark
potential in Pirner-Galow model and Andreev-Zakharov model, we extend the
discussion to a general deformed $AdS_5$ case. It is shown that the obtained
potential is negative definite for all quark-antiquark separations, differs
from that using the usual renormalization scheme.
