The considerations in this article relate to the relationship between state security and the necessity of introduction restrictions on constitutional rights and freedoms of man and citizen. In order to present the multidimensionality of this relationship, the author first explained the concept of state security with regard to the meaning of constituent concepts, namely the concept of state and the notion of security. Subsequently, the analysis of constitutional provisions was carried out from the point of view of their relationship with the concept of state security and in the context of protection of constitutional freedoms and human and civil rights. The analysis has proven that in many cases the implementation of state security requires restrictions on constitutional freedoms and rights of man and citizens. These restrictions should respect the principle of proportionality.