The volume coefficient $K$(=incompressibility of the nuclear matter), the Coulomb coefficient $K_c$, and the volume-symmetry coefficient $K_{ vs}$ of the nucleus incompressibility are studied in the framework of the relativistic mean field theory, with aid of the scaling model. It is found that $K= 300\pm 50$MeV is necessary to account for the empirical values of $K_v$, $K_c$, and $K_{ vs}$, simultaneously. The result is independent on the detail descriptions of the potential of the $\sigma$-meson self-interaction and is almost independent of the strength of the $\omega$-meson self-interaction.
Categories: nucl-th