A lot of modern research devoted to the creation and study of compounds present in the condensed state. In this regard, development and improvement of methods of description of crystalline structures are actual. To describe the crystal structure and the calculation of its key parameters is developed and continue to develop special techniques. Among them is the method of compact description of the crystal lattice proposed in Ph. D. Sychev M. S. The article seeks to study the applicability of these methods to crystals of hexagonal crystal structure and a method of solving this problem.