  We study decay properties of the $P$-wave charmed baryons using the method of
light-cone QCD sum rules, including the $S$-wave decays of the flavor
$\mathbf{\bar 3}_F$ $P$-wave charmed baryons into ground-state charmed baryons
accompanied by a pseudoscalar meson ($\pi$ or $K$) or a vector meson ($\rho$ or
$K^*$), and the $S$-wave decays of the flavor $\mathbf{6}_F$ $P$-wave charmed
baryons into ground-state charmed baryons accompanied by a pseudoscalar meson
($\pi$ or $K$). We study both two-body and three-body decays which are
kinematically allowed. We find two mixing solutions from internal $\rho$- and
$\lambda$-mode excitations, which can well describe both masses and decay
properties of the $\Lambda_c(2595)$, $\Lambda_c(2625)$, $\Xi_c(2790)$ and
$\Xi_c(2815)$. We also discuss the possible interpretations of $P$-wave charmed
baryons for the $\Sigma_c(2800)$, $\Xi_c(2930)$, $\Xi_c(2980)$, and the
recently observed $\Omega_c(3000)$, $\Omega_c(3050)$, $\Omega_c(3066)$,
$\Omega_c(3090)$, and $\Omega_c(3119)$.
