My thesis is focused on crime related to the abuse of addictive substances. It is a broad topic, because the abuse of addictive substances brings with it a whole range of social, health and economic problems and binds a wide range of criminal activities. The aim of my thesis is to analyze the body of each drug offence, related case law and current issues of the drug problem in the Czech Republic. The first chapter defines the basic terms associated with drug issues. The following chapter deals with the classification of drugs and their effects. It classifies drugs as legal and illegal, and lists their most harmful psychological, social and health risks. This chapter helps us to make a picture about the most commonly abused drugs in our coun...