When the ordinary Court accepted prosecutor’s application for judicial compulsory measures against juvenile, in practice the issue “the application should be assigned to Criminal or Juvenile Tribunal?” often arouses controversy. This article analyzed two factors of this issue, one is the principle of lawful designation of judges, and the other is interpretation of Article 18, Paragraph 1 of Juvenile Delinquency Act (Taiwan). This article found that, most judges interpret the above Article restrictively, which reflects the superiority of Criminal Justice System.