The life activity of Russian family, regardless of region of residence and ethnicity, is largely determined by changing of patterns of demographic and reproductive behavior of population. The purpose of the study is to analyze both modern demographic, marital and familial situation and indicators characterizing the demographic and reproductive behavior of the Udegeans of the village of Gvasyugi, the Lazo District, the Khabarovsk Krai. The study utilized data from the Federal State Statistics Service, household registers, and official annual reports of the rural feldscher-obstetric station, the subsidiary №2 of village of Gvasyugi. In July 2025 the sociological survey was carried out with purpose to determine self-assessments of quality of life of the population of village of Gvasyugi, considering the current demographic situation and social economic factors. It is establish that the number of the Udegeans of the village of Gvasyugi has trend to declining at low natality and significant migration of the youth from the village to urban areas to receive education. It is determined that the majority of the Udegeans are not in registered marriages because of absence in the village of necessary social infrastructure, coupled with the out-of-the-way and remoteness of the village from the district center to obtain the necessary service on marriage registration. It is established that commitment to national traditions and positive attitude of the Udegeans to expanded reproduction in in single-ethnic or mixed families under better social economic conditions could contribute to increasing of natality, especially with third child, and overall increase of the numbers of ethnic group. It is demonstrated that the low standard of living and the absence of high-tech medical care hinder the realization of reproductive intentions within the family.

natality, the Udegeans, families, marital and family attitudes, indigenous small population, village of Gvasyugi, Khabarovsk Krai..