  In this work, we propose a method to show the correspondence between hadron
and its quark component nuclear modification factors. A parton and hadron
cascade model PACIAE based on the PYTHIA6.4 is employed to calculate the hadron
and its quark component nuclear modification factors in the 0-5\% most central
$Pb+Pb$ collisions at $\sqrt{s_{NN}}$=2.76 TeV. It turns out that the hadron
nuclear modification factor is usually smaller than that of its quark
component. On the other hand, it is shown in our study that the "dead cone
effect" is more likely to be identified with the quarks and mesons but not with
the baryon states obviously.
