Take Taipei as an example , larceny permanently has been the typle of the most number of people of the juvenile delinquency for a long time. As to emergence pieces between 2000-2004, person's juvenile delinquency in Shilin Area was ranked the first high, and larceny in Shilin Area was regarded as the most serious area in theft cases . So this research uses methods , such as Literature Review , Field Work , Geographical Information System ,etc., to probe into the spatial distributing type and characteristics of the larceny , and to use the crime hot spot , crime maps to find out the way to prevent.