The pandemic has significantly changed the social and economic situation in the world in recent months. Its effects affect people from disadvantaged groups and from groups with risk of disadvantage at the most. Migrants residing in different parts of the world for economic reason, were deprived of job opportunity, but also to return to their home country. People fleeing persecution and war cannot benefit from international protection, because of suspension of international programmes and reduction of state involvement in providing aid. The situation of the families has a direct impact on the situation of the children. The issue is important, but also poorly described in Polish scientific literature. The article is an attempt to identify the basic problems they are confronted migrant children not only in Poland, but also in other countries. The analysis were determined by the question: What is the impact of the crisis caused COVID-19 on the situation of migrant children? The answer was formulated in relation to current international studies and it has preliminary nature. It requires further analysis, especially focused on empirical research.