Analysis of tested restoration methods and their effects on historical fresco restoration cycles emphasized the specification of previous achievements and losses in the restoration industry. As examples, the wall paintings of the Dunhuang sanctuaries in China and the Trinity Gate Church in Kyiv were analyzed. Based on modern comprehensive research, periodic photo documentation and scientific monitoring of the monument, the main factors influencing the preservation of the mural of the Trinity Gate Church have been identified in the context of studying the problems of the current state of monumental painting. With a perspective on the development of heritage preservation measures and recommendations for further conservation, the study aims to determine the most effective ways to maintain the artwork's original state. The original chemical composition of the mineral pigments of the sanctuaries of Dunhuangand the Trinity Gate Church was determined. The common problems of the state of emergencyfor the wall paintings of Dunhuang and the Trinity Gate Church are outlined.
