The study showed the diversity of sources of narcotic substances in the world, some of which have a natural origin that is cultivated, such as hashish, coca, khat, and banjo, and some of them have a shared natural and the industrial synthetic origin, such as amphetamines, the most important of which are narcotic pills and cocaine. While fully manufactured materials are the most effective, such as Captagon and crystal, and therefore these materials must be classified into several types, including the foregoing, and some that take another aspect such as the basis of color, so they are classified as white, such as cocaine and heroin, and black, such as hashish and opium, including the classification of the degree of severity, which Narcotic substances were divided into very dangerous substances such as opium, narcotics, cocaine and crystal, and medium dangerous substances such as stimulants, sedatives, hypnotics and volatile substances. The study recommended the need for the relevant authorities to adopt the task of developing their anti-drug capabilities to be compatible with all these types, especially those that are widespread in Iraq.