This thesis deals with the provision of Article 6 of Regulation (EC) no. 593/2008 of the European Parliament and of the Council of 17 June 2008 on the law applicable to contractual obligations (Rome I Regulation), which regulates the applicable law for consumer contracts and primarily aims to protect consumers as weaker contracting parties. The thesis, first of all, deals with the consideration of the historical development of the provision in question and its purpose, which manifests itself in the prevention of evasion of mandatory consumer protection regulations of the country of the consumer's habitual residence. Furthermore, of the thesis discusses the ratione materiae, ratione temporis and ratione teritorii of the field of the application of the provision in question, and then the very concept of consumer contract and applicable law that applies to it. One of the fundamental principles of the Rome I Regulation is the principle of party autonomy, that is, the right of the contracting parties to choose by agreement under which law a specific contract will be governed. Therefore, the law chosen by the contracting parties is primarily applicable. In the case where the choice was absent, the law of the country where the consumer has his habitual residence will be applicable for the consumer contract, but only if certain conditions are met. However, parties’ choice of law may not have the result of depriving the consumer of the protection guaranteed to him by the provisions that cannot be derogated by agreement by virtue of the law which would have been applicable if the choice had not been made, i.e. the law of the country in which the consumer has his habitual residence. Finally, exceptions to the general rule are also discussed, in which the provisions of Article 6 of Rome I Regulation do not apply.