During the UN`s Decade of Women(1975-85) as it followed the period of the "democracy boom(1973-76)" in Thailand. Since that time, several women activists and social workers have felt an inadequacy in the government`s current views and approaches to the issue of women`s development. Increased equality between men and women was attained in the 1974 Constitution, the result of pressure from a movement promoting the status of women. This paper focuses on the policies on women`s development in Thailand in order to solve the source of inequality of women`s right. Policies on women`s development in Thailand have influenced both by international agreements and conventions and national legislation. Thailand adopts the obligations its government has made under various international conventions, agreements, protocols and commitments. Among the most relevant are the Beijing Declaration and Platform for Action, International Labor Convention and Convention on the Elimination of All Forms of Discrimination Against Women. Main objectives of the women`s development policies can be summarized in to three broad categories as follows: To enhance women`s economic and political opportunity and choices so that they can fully develop their potential; To encourage women to become more involved in all aspects of national development and at all levels of the decision-making process, and not be confined to their role in the family, Tocreate a national environment that will be supportive of women`s employment. In 1989, the National Commission on Women`s Affairs was established as the national machinery for promoting and coordinating efforts for the advancement of women. Its main responsibility is to advise the Government on women`s issues, prepare policy statements and development plans for submission to the acbinet for approval, and make recommendations on legislation that may affect women`s human rights and their basic freedoms. NGOs on women in Thailand are broad bases, raging from grassroots organizations of people at the upper level of Thai society. According to Beijing Declaration and Platform Action, they are paying more attention to international developments that impact on women, such as international human rights issues. National Council of Women of Thailand(NCWT) is one of the largest, longest lasting and best-known women`s organization. It is an umbrella organization of women NGOs whose network reaches all provinces of Thailand. Recently NCWT has made serious and quite successful attempts to reach out and work on a partnership basis with grassroots women`s group. After the Constitution 1997 which is specified that men and women have equal rights, and unjust discrimination against a person on the grounds of sex in not permitted, NCEA as well as NGOs worked throughout the constitution drafting process to ensure the provision for the promotion of human rights, gender equality and social justice.