The Constitution of Japan was enacted in accordance with the amendment procedures stipulated by the Imperial Constitution of Japan. Proposed constitutional amendment, which was passed by the Council was submitted to the 90th Extraordinary Session of the Imperial Diet in June, the 21st year of Showa (1946). After having been amended by House of Peers and House of Representatives, the Imperial Diet passed the Constitution of Japan on October 7 of the same year. Following the approval by the Council on October 29, the Constitution of Japan was promulgated on November3 of the same year.
The Constitution of Japan was enforced on May 3,the 22nd year of Showa (1947). It makes the Emperor the symbol of state and has basic principles of sovereign power resides with the people,respect for fundamental human right and pacifism as well as establishment of separation of three powers.