Abstract This study used policy argument analysis method to analyze pension policy development in Taiwan, Hong Kong and Singapore, based on the perspective of simple democratic model to discuss the influence of democratization¡¦s influence on East-Asia social welfare policy. The conclusion of this study shows that global economic competition help to promote the pension systems that encourage workfare. The research result also meets to those former researches conclusions of East Asian Productivtist Welfare Regime. In the other hand, due to highly politic at party competition and vivid development of civil society, however, governments of Taiwan and Singapore have compromised to consolidate and increase their pension policies. Conversely, Hong Kong, due to politics-led government, there was the most unequal distributing condition in its pension policy. In the cases of Taiwan, Hong Kong and Singapore, we have found the influence of democratic development on welfare policy in a globalization era is meaningful. According to the conclusion of this research, democratic development should be define as a key factor of welfare regime typology in East Asia, to differentiate divergent types of states of East Asian productivitist regime. And two key points of democratization¡¦s influence in East Asia should be noticed: 1. Legal freedom of expression and publication can make social welfare issues to be disputatious in the civil society. 2. Party competition will lead social security plans to be realized, because of the desires of politicians to win votes. Keywords: simple democratic model, pension system, provident fund, East-Asia welfare regime.