  A proper way of subtracting the continuum contributions in light-cone QCD sum
rules (LCQSR) is demonstrated. Specifically, we calculate the continuum
corresponding to a typical OPE appearing in LCQSR by properly combining the
double dispersion relation with QCD duality. We demonstrate how the subtraction
terms can spuriously contribute to the sum rules. In the limit of zero external
momentum, taking out the spurious continuum is found to yield the sum rules
using the single-variable dispersion relation. The continuum factor constructed
in this way differs from the one appearing in usual LCQSR. The difference
substantially affects the extraction of hadronic parameters from the
correlation function involving baryon currents.
