The master's thesis examines the discursive aspect of security, expressed through the parliamentary debates, which took place in the Slovenian parliament during the 'refugee crisis' in Slovenia, September 2015 – March 2016. Through micro-discursive and linguistic analysis, this work seeks to show whether refugees were securitized, treated by the members of Parliament as a security issue. The analysis of parliamentary debates tries to show the process of securitization initially outlined by the Copenhagen School, which focuses on the speech act, that presents an issue to the referent object as an existential threat and demands extraordinary measures outside of normal politics. If the audience accepts this, securitization is successful. The use of linguistic means is analysed in the parliamentary discourse, such as agents, metaphors and other expressive words, and the correct usage of terms refugee or migrant. The master's thesis background is presented by the 'refugee crisis' in the European Union, on the Western Balkan Route and in Slovenia. The emphasis is also on the Slovenian parliament and parliamentary discourse, but the most important are security studies, within which the securitization theory is presented by the Copenhagen School, which is analysed in the master’s thesis.