In many countries of the world community,a radical rethinking of the social role of women in society is being considered and priority measures are identified to ensure their rights.The equal participation of women in the political and economic life of the country is considered by the democratic community as necessary conditions for achieving progress in socioeconomic development,in solving political,socio-cultural,racial,ethnic and other problems.Despite the formal equality of women with men,the social inequality of women in Japan continues to persist at all levels of the social hierarchy.So,there is still discrimination against Japanese women in both political and public life,despite the equality of the sexes.This paper uses the Leaky Pipeline theory to clarify the gender role consciousness of underrepresentation of women in political positions including the Diet of Japan,and the role behaviour of women in that circumstance.The gender discrimination is not a problem unique to Japan.Many developed countries have experienced the same and are still working on a variety of solutions.In accordance with the statements above,this paper analyses the current situation in Japan and considers other countries’ experiences where women have advanced into the society and gender equality is present.And this is a proposal of a solution to create an environment where women can play more active roles in Japanese society and government in the future.