Juvenile delinquency is one of the serious problems of mass society. It is an outcome of rapid urbanization and industrialization in modern times. This has almost become a universal problem in most of the industrialized countries including India and Bangladesh. Delinquency is a kind of abnormality. When a juvenile exhibits behaviour which may prove to be dangerous to the society or to himself he may be called a Juvenile Delinquent. Since the juveniles are not grown up enough their work should be treated as abnormal work and, in a systematic way, the abnormality should be removed. Proper psychic treatment can be helpful in this regard. In simple words, it can be said that juvenile delinquency is a type of abnormal or anti-social behaviour of a juvenile who is below an age specified by statute.