One of the basics humans rights is right to self-determination about ourselves, which in the medical law expresses itself through the giving of consent to medical treatment by patient. Therefore, the Polish legislator, wants to guarantee, in the best way, a realization of this right, issued the series of regulations relating to requirements that must be met for the giving of consent and has provided legal mechanisms to protect them. In this article, the Author analyzed a legal provisions of Polish legal system regarding the giving of consent to medical treatment by patient and presented the views of doctrine that have been developed in this matter.