LHCb results on exotic spectroscopy

The latest years have observed a resurrection of interest in searches for exotic states motivated by precision spectroscopy studies of beauty and charm hadrons providing the observation of many new exotic states. The recent results on spectroscopy of exotic hadrons obtained by the LHCb Col- laboration are reviewed. This is, in particular, an observation of $Pc(4312)^+$ and two-peak structure of $Pc(4450)^+$, observation of $B^0_{(s)} \to J/\psi p\overline{p}$ decays and an evidence of exotic $Zc(4100)^−$ state