抄録
The 17 Articles Constitution by established Prince Shotoku has been neglected as one of no value by many constitutionalists of Japan. But such a tendancy is not right. In this essay, I emphasized (1) importance as the first written constitution of Japan, (2) importance as a national essential polity of Japan, (3) importance as the first written constitution all the world, (4) importance as a useful constitution for the future on this subject.