Today's student is tomorrow's citizen it is necessary for us to prevent adolescents to become prone to substance abuse. Adolescence is a period when a lot of change takes place in the body and mind. Adolescents start to using harmful and illegal substances Drinking, smoking .and .drug abuse by adolescents affect general health and physical growth, emotional development and school performance. Continue use of this substance can lead to physical and psychological harm; it is very difficult to stop. According to WHO 8.9% of the total burden of disease due to the use of the psychoactive substances in which 4.1% is alcohol,0.8% by illicit drug abuse of the burden of disease. There are 2 billion are alcohol users globally according to WHO. in this study the pre-experimental research design is used and a convenient sampling technique is used for the selection of sample the structured questionnaire is used for the collection of data. The sample size is 60 boys nursing student .the level of knowledge score regarding alcohol abuse and its treatment among the boys students is different according to the age group the finding of study concludes in between (17-19 year) is 39.99%,(20-22 year) is 46.66% and 23-25 year) is 13.33%. the reason for conducting the study because majority of students are in adolescents' age and they are more prone to using alcohol at that age.