The article is devoted to research of features of the use of migration as an important instrument for the prosecution of hybrid war. Using a complex of general scientific, logical, and empirical scientific methods, two main strategies of using migration policy in the context of conducting hybrid aggression are singled out: positive and negative. A positive strategy involves the use of migrants by the aggressor state to strengthen its own positions and spread its own influence over the victim state. In such cases, the aggressor state, as a rule, directs migration flows to its own territory, using the arriving migrants as an instrument to strengthen its potential. In the case of using a negative strategy, the goal is to weaken the victim state by directing migration flows to its territory. For this, migrants from underdeveloped countries are most often used, who a priori can be a potential destabilizing factor in the territory of the country that has become the object of hybrid aggression. It is emphasized that in order to achieve its own goals through the effective use of migration processes, the aggressor state needs to control three main parameters of international migration: the number of migrants and the composition of migration flows; the direction of movement of migrants; and the behavior of migrants in a new place of residence. In the first case, important parameters describing migrants may be their level of qualification, the ethnic and religious composition of the migrating population, their age and gender characteristics, etc. In the second case, we are talking about emigration or immigration, which will ultimately affect the population of a certain country or territory. The third case involves monitoring the level of stability of a certain country or region and, consequently, forcing the victim state to take certain actions. It is emphasized that the exercise of control over the parameters mentioned above and their choice depend on the chosen strategy of using migration as an instrument during the implementation of hybrid aggression.