To find out the causes, level of knowledge and sources of drugs among drug addicted teen agers. Materials & Methods: It was cross sectional mixed method type of study conducted at different shelter homes at Dhaka and Mymensingh from January 2022 to November 2022. Study population were the teen agers, age 14-19 years old patients admitted to the shelter homes. Data was collected by face to face interview with pretested structured and unstructured questionnaire.