The article aims to explore the role of context and common sense in the dialogical reasoning of characters in some works by Nguyễn Ngọc Thuần. Specifically, it has cataloged the dialogues in the stories, categorized the contexts and common sense, and counted their frequencies. From these results, we commented on the influence of contextual factors and common sense in shaping the dialogical style in Nguyễn Ngọc Thuần's creations. Additionally, the article highlights Nguyễn Ngọc Thuần's character portrayal through the perspective of dialogical reasoning. Thus, besides understanding argumentative structures, analyzing context and common sense in dialogical reasoning is a direction and a different perspective when approaching literary works.