This article aims to determine the reasons for the number of microbreweries increasing in the Czech Republic. The analysis compares various (micro)brewing industry indicators in selected traditional beer- drinking countries. The research questions are focused on relations among number of microbreweries and demographic aspects, market concentration aspects and some other beer market indicators. Furthermore, there were made simulation – for which conditions will be in the Czech Republic 400, 500 and 1 000 microbreweries. Statistically significant dependency on the number of microbreweries are beer market concentration (Gini index), the percentage of the total population made up of the 25 – 39 years age group, and the share of domestic beer consumption in cans. Since the beginning of Economic crisis the number of Czech microbreweries has been increasing exponentially and the results suggest that the microbrewery boom will have been continuing.