  Using the P\"{o}shl-Teller approximation, we evaluate the neutrino
quasinormal modes (QNMs) of a Kerr-Newman-de Sitter black hole. The result
shows that for a Kerr-Newman-de Sitter black hole, massless neutrino
perturbation of large $\Lambda$, positive $m$ and small value of $n$ will decay
slowly.
