  Within the QCD factorization approach, we calculate the branching fractions
and $CP$ asymmetry parameters of 12 $B \to K_0^*(1430)K^{(*)}$ decay modes
under the assumption that the scalar meson $K_0^*(1430)$ is the first excited
state or the lowest lying ground state in the quark model. We find that the
decay modes with the scalar meson emitted, have large branching fractions due
to the enhancement of large chiral factor $r_\chi^{K_0^*}$. The branching
fractions of decays with the vector meson emitted, become much smaller owing to
the smaller factor $r_\chi^{K^*}$. Moreover, the annihilation type diagram will
induce large uncertainties because of the extra free parameter dealing with the
endpoint singularity. For the pure annihilation type decays, our predictions
are smaller than that from PQCD approach by 2-3 orders of magnitudes. These
results will be tested by the ongoing LHCb experiment, forthcoming Belle-II
experiment and the proposing circular electron-positron collider.
