Abstract. Historical monuments that have survived to this day are considered a precious source that reflects the knowledge, experience and development of the handicraft tradition of our people. The contribution to the creation of the invaluable art of the architecture of the East of our ancestors, their mind and efforts deserve respect. Thus, historical monuments created from simple bricks make the whole world admire for many centuries their unique skill of erection and grandeur. The secrets of the longevity of ancient monuments that have been preserved for many centuries, the details of their construction have come down to our times from the rich heritage of history. Admirable are the decorations of domes and vaults, their coverings, which still have not lost their brilliance and attractiveness, as well as testifying to the unique and eternal achievements of the ancient art of architecture. In connection with this, the preservation and preservation of historical monuments is considered an important task, which is of great importance for the cultural heritage of the whole world. Unfortunately, the technical condition of most of the monuments today is unsatisfactory. The emergency state of architectural monuments occurs due to the impact on them over a long period of time of various factors (earthquakes, various man-made, climatic changes), as well as due to the weakening and change in the composition of the soil under the foundation of the monument. For the reconstruction of architectural monuments, monitoring of structures of the technical condition and the use of non-destructive methods for this purpose are used. The composition of such studies includes certain stages: the space-planning system of the building, constructive solutions for elements, description of damage, study of the composition of the foundation, determination of the previous and current seismicity of the territory, numerical studies of structural movements and their monitoring. This article provides an assessment of the technical condition of the Kok Gumbaz mosque located in the city of Shakhrisabz based on instrumental checks and visual observations. Suggestions and recommendations for the elimination of certain defects, damages and deformations are given.