Juvenile delinquency is an important social issue that the world faces up, called as one of the three greatest harm, has caused the high value of the criminologist, sociologist and psychologist. At present, it faces the serious condition that the rate of juvenile delinquency rises continuously, regardless of the western developed countries and the developing countries. Juvenile delinquency has become a difficult problem of puzzling the modern society from the gun cases that it happened continuo...