The study analyzed the age of onset of alcohol consumption among adolescents in Kinshasa. The study led to the following results: 44.2% of adolescents in the cityprovince of Kinshasa start consuming alcohol at the age of 16- 17. These teenagers use alcohol to solve a disturbing problem (33.3%). The following factors promote alcohol consumption: parents (p=0.432**, r=0.000), friends (p=0.418**, r=0.000), culture (p=0.627**, r=0.000), social classes (p=0.639**, r=0.000), family (heredity) (p=0.401**, r=0.000), school (p=0.361**, r=0.000), availability and publicity (p= 0.349**, r=0.000) and alcohol consumption by adolescents.