The most recent LHCb results related to spectroscopy of exotic states are reported, including an update of the $J/ψ p$ resonances where a new lighter narrow state has been discovered, an evidence of charged $Z_c^-\to \eta_c \pi^-$ state, and an observation of decays of $B_{(s)}^0\to J/\psi p\overline{p}$, which is useful for search of exotic states.