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We study the residues of $\Lambda_Q$-type baryons ($\Lambda_Q$ and $\Xi_Q^A$)$(Q=b,c)$ and $\Sigma_Q$-type baryons ($\Sigma_Q^{(\ast)}$, $\Xi_Q^{S(\ast)}$and $\Omega_Q^{(\ast)}$) in the quark-diquark model within the Bethe-Salpeter(BS) formalism. These residues can be used, for example, in the calculations ofthe amplitudes in the scattering processes. After constructing the baryoniccurrents in the BS formalism, we derive the relations between the BS wavefunctions and the residues for these baryons. The BS equations are solvednumerically with the kernel including the scalar confinement and the one gluonexchange terms and with the covariant instantaneous approximation beingemployed in the calculations. Finally, we obtain the numerical values of theresidues $0.103\,\rm GeV\sim0.224\,\rm GeV$ for $\Lambda_Q$, $0.143\,\rmGeV\sim0.215\,\rm GeV$ for $\Xi_Q^A$, $0.262\,\rm GeV\sim0.361\,\rm GeV$ for$\Sigma_Q^{(\ast)}$, $0.313\,\rm GeV\sim0.460\,\rm GeV$ for $\Xi_Q^{S(\ast)}$and $0.473\,\rm GeV\sim0.571\,\rm GeV$ for $\Omega_Q^{(\ast)}$ in the ranges ofthe parameters in our model.

Residues of $\Lambda_Q$-type and $\Sigma_Q$-type Baryons in the Bethe-Salpeter Equation Approach