Abstract
This work explains the prevailing trends of internal migration in the Czech Republic, which have a major impact on the population and the overall development of individual regions. In the analysis of some key phenomena of internal migration, there have been formulated and tested four hypotheses, which were supplemented by more detailed analysis of population data. The results of hypothesis testing indicate that in the Czech Republic: (1) dominated internal migration from rural to urban than in the opposite direction, which means that they are manifested desurbanization processes; (2) total internal migration before 1989 was different than after this year; (3) are not all regions equally attractive to migrants; (4) internal migration does not meet certain defined conditions of the selectivity of migration.