Abstract The purpose of this study is to observe the evolvement of social classes through different economic stages after the restoration of Taiwan. Also, this study applied class theory to analyze the cause of class antagonism, and view the factors of gender oppositions through the perspectives of patriarchy and feminism. The research methods applied in this study were historical research and documentary analysis and probed into whether both of them have identical quality, and if there is one approach that can solve the situation of oppositions. This article focused on the ¡§fortune,¡¨ both classes and genders have subordinate relationships due to the unequal fortune distributions. Therefore higher classes would exploit lower classes, and because of males dominate the power of economics to consolidate their patriarchy therefore cause the loss of female rights. However, it is not easy to solve these two issues. The social structure has been secured for long time. Especially the economic pattern in Taiwan deviates to capitalism, under the inter-effects of liberal economics and traditional patriarchal value, not only has created the class structure, but also let females suffer from the duplicate exploitations from labor market and family therefore are reluctant to be placed at an unequal position. The class has been altered for decades however the transition of economic structure has slowed down in recent year. The middle class didn¡¦t vanish, but steadily progressed and has a tendency of increasing. However the up-flowing channel is not that smooth. Most important is that the exploitations and conflicts between upper level classes and lower classes and the expansion of poverty gap. Therefore the government started to make improvements on the situation, not only improved the labors¡¦ rights, established labor protection acts in order to reform the unequal relationships between labors and capitals. But also re-arrange the fortune with social policies to diminish the poverty gap. As for gender issue, due to the raise of feminism, with consistent efforts of these newly formed feminist social interest groups, political and economic structure variations, and legal protections, the unequal relationships between genders has improved substantially. This article analyzed the major cause of class antagonism and gender oppositions, except for substantial rules, the most important thing of improvement is to alternation of concepts requires to be achieved through family and school education. The ultimate goal of all human beings is to create a harmonious society, though the purpose is unable to be reached in just one step, however with consistent striving, a harmonious society can be expected soon.