In india, juvenile delinquency is a serious problem. The purpose of this book is to provide systematic overview of studies on juvenile delinquency behaviour and Personality, Emotional Stability and Parenting Styles. There are many factors which cause juvenile delinquency in children. In this research I found various dimensions of personality have been investigated to the development of deliquent behaviour. Also Emotional instability is one of he most significant causes that led to delinquents behviour. Majority of delinquent suffer from emotional problems. Juveniles are the individuals who have not arrived at adulthood or the age of majority. Adulthood or the age of majority in a lawful framework is dictated by the law. Parenting styles is one of the important factors in the study of delinquency.