The content of interethnic confl icts and the process of their prevention is revealed. The interethnic confl ict in the social groups of military personnel is revealed as a type of social confl ict that determines the growth of contradictions of values and interests, mutual misunderstanding of cultural priorities, hostility, inconsistency of service and labor behavior, conditions, as well as actions. It is proved that interethnic confl icts in the military team are the result of the deterioration of the level of interethnic culture of communication of military personnel. At the same time, the prevention of interethnic conflicts is the result of the targeted construction of the culture of interethnic communication of military actors. The latter can manifest itself both at the superfi cial level (characterized by the degree of understanding and assimilation in the consciousness of the peculiarities of various ethnic groups: the presence of necessary ideas, ethnic values, rules, as well as the norms of interethnic communication of military personnel), and at the practical service-labor level (the level of eff ectiveness of the practices of service implementation of interethnic communication). It is proved that the prevention of interethnic confl icts is the result of the project actions aimed at the formation of the eff ective culture of interethnic communication, as a result of which the conditions preventing the occurrence of ethnic confl icts among military personnel are created. The prevention of ethnic confl icts through political design determines the process of removing the conditions for the growth of tension, eliminating objective socio-cultural contradictions in the system of interethnic relations. It defi nes systemic transformations aimed at a temporary homeostatic confl ict-free state of the modern military collective.