As a result, Article 130 of the National Diet Act (Act No. 79 of 1947), which came into force along with the enforcement of the Constitution of Japan, stipulated, "The National Diet Library shall be established in the Diet by a separate law so as to assist Diet members in their research and study."
このため、日本国憲法の施行とともに施行された国会法（昭和22年法律第79号）130条は「議員の調査研究に資するため、別に定める法律により、国会に国立国会図書館を置く。