The author identifies the Russian architectural heritage in the Xinjiang Uygur Autonomous Region of China in the process of intercultural and interethnic interaction of the Russian Diaspora with the peoples of the province. In this regard, the subject of the study is the preserved monuments of Russian culture - residential buildings, temples, cemeteries. The structure of the study is determined by the need to explore the mutual influence of the culture of the Russian diaspora and those of local peoples on the example of architectural structures. The research is based on modern literature, as well as documents of Russian archives: materials deposited in the Archive of Foreign Policy of the Russian Empire, the Archive of Foreign Policy of the Russian Federation, the State Archive of the Russian Federation, the Russian State Military Historical Archive. Most of them have not been introduced into scientific use before. The author identifies the features of intercultural and interethnic interaction of representatives of the Russian diaspora with local peoples for a long time and depending on the political situation in the region. It is noted that at the stage of the formation of the Russian Diaspora in the XUAR there were difficulties in the relations between Russians and representatives of local ethnic groups. At the same time, the local culture had a serious impact on the development of the Russian diaspora. There is noted the rather competent policy of the Chinese and Russian authorities at the present stage to support the culture of Russians in Xinjiang, although the author does not exclude difficulties in its further preservation. Therefore, according to the author, there is a need for further close interaction between the Chinese and Russian authorities in order to determine new courses of cooperation in this direction.