This paper presents studies of zinc selenite nanocrystals obtained by chemical and electrochemical deposition of zinc in a silicon dioxide track template. With the use of two kinds of electrolytes, zinc selenite nanocrystals were prepared by template synthesis and their morphological, structural and photoluminescent properties were investigated. The electrochemical deposition method was shown to be more optimal to create this crystal in comparison to the chemical deposition method. The cell parameters created by us match up with the results of other authors. Photoluminescence spectra were recorded in the spectrum interval from 2 to 4 eV at room temperature at an excitation wavelength of ~ 4 eV.