The Bachelor's thesis describes and analyses the protection of a bank client. In the beginning I discuss the necessity of the institution of consumer's protection define the basic terms and describe the structure of the system of consumer's protection. Then, I depict the basic elements of the consumer's protection, the requirements to banks, the duty to provide information, the protection of personal data, the bank secret and the deposit insurance. After these I concentrate on the analysis of the protection in the area of payments system and consumer lending. In the end I diverge the protection on the active and the passive.