This bachelor thesis evaluates the efficiency of foreign exchange interventions implemented by the Czech National Bank in the years 2013 to 2017. Also, it analyzes their influence on the inflation rate in the Czech Republic. This thesis describes the specific situation in the Czech economy, which led the CNB to the conclusion to use the currency exchange rate as a tool of monetary policy. It examines the progress and process of foreign exchange interventions and deals with their real effects on the inflation rate in the defined period. To get a more detailed view of the process of intervening, it confronts the predictions of the CNB with real economic development and with the retroactive description of the given situation made by the repres...