This study aims to interpret Boccaccio`s last fiction, il Corbaccio, one of the most controversial works of his, as a moral treaty rather than a simple literary fiction. In particular, by placing the work in a proper historical context in which the author lived as a public persona for his city Florence, the present study ultimately tries to delve into Boccaccio`s view of women. In that regard, the comparison of the lurid misogyny represented in il Corbaccio with the contemporary concerns for women`s vanity shows us that Boccaccio, by stressing men`s vendetta against women, represented male-centered world-view throughout the work. The sumptuary laws of Boccaccio`s ages and the contemporary fear of women`s dominance over men, both of which are the main issues running underneath the work, are representative of this gender-biased view of women, society, and universe etc. In short, il Corbaccio, despite its literary form of fiction that seemingly does not present any social significance, is a moral treaty for enlightening contemporary male readers, because the work puts its emphasis upon the hierarchical order of the world based upon gender-relationship and offers a broad spectrum of ideological standpoints on how the nature and worth of women were understood in the institutional context of the mid-Trecento Florence.