Family of tungstate crystals (PbWO4, CdWO4, CaWO4) brings one of the largest sets of luminescent detecting materials into techniques using equipment for registration of high energy particles from medical and border pass tomographs to high energy physics. Improvement of scintillation characteristics of these crystals was achieved by various ways such as special doping of the crystals with impurity ions, especially with rare earth (RE) ions, and annealing of the crystals in various atmospheres, e.g. oxygen, argon, air. Usually, more than one type of emission centres are formed by the RE3+ ions in the tungstate crystals doped with the RE3+ ions. Features of the RE3+ ions incorporation in the tungstate crystal lattices are under discussion, yet. The lead tungstate crystals were grown by the Czochralski method using the "Crystal-617" installation in Ivan Franko Lviv State University at laboratory headed by Prof. M. Pashkovsky. The blend was synthesized from lead, tungsten and corresponded RE oxides. The impurity concentrations in the blend were 5x10-2 wt %. Our analysis showed that impurity concentrations in the grown samples were reduced by about one or two orders of magnitude. The measurements of reflection, luminescence emission and excitation spectra were carried out using synchrotron radiation at SUPERLUMI station at HASYLAB (DESY), Hamburg, Germany (Project # I- 20110592) and laser radiation at complex for spectral-luminescent investigations at R&D Laboratory ―Spectroscopy of Condensed State of Matter‖ of Physics Faculty, Taras Shevchenko National University. Emission spectra of the undoped PWO crystal at 10 K consist of the band in 350 – 800 spectral range with maxima at about 460 - 470 nm at λex 300 nm. Extended long wavelength part of the spectra at these excitations evidences contribution of at least one spectral component of lower intensity with maximum near 570 nm. Spectra obtained at λex 309 nm consist of the bands in 420 – 800 nm spectral range those have maxima at about 520 and 570 nm, besides the long wavelength side of the spectra contains component with maximum near 600 nm. Incorporation of the Yb, Eu or Pr impurities in the PWO lattice shifts position of the main band to the short wavelength region (445 nm at λex = 270 nm). Observed effects of the RE doping were similar for various RE ions. Carried out procedures of decomposition of the spectra with standard mathematical programs has revealed that all the measured spectra are formed by the same bands with maximum positions at 410, 460, 505, 565 and 635 nm. Structures of centers and models of processes responsible for arising of the obtained emission bands have been discussed taking into account studied effects of the impurity RE ions on spectral characteristics of the corresponded bands. In particular, incorporation of the RE ions increase intensity of the 410 nm band by additional RE-induced channel of exciton creation and strongly decreases relative intensity of the 635 nm emission by reducing content of the lead vacancies. Relative contribution of the 565 nm band does not depend on the RE impurities presence. Intensities of the 460 and 505 nm bands depend on RE doping insignificantly.