Cultural Ecology has remarkably become influential in North America during the middle of the twentieth century. Cultural Ecology explains human's social arrangements based on their environmental adaptations. Although it is often criticized as not taking into account cultural changes and effects of external factors to the process of a, given group's culture formulation, Cultural Ecology bears important values when explaining human's adaptation to specific ecology as an intrinsic factor that shapes the culture. Studies of culture in Vietnam within this theoretical framework mainly explained cultural phenomena as direct adaptations to the environment in the process of formulating specific regional cultures. This approach is somewhat different from traditional approaches of Cultural Ecology which pay much attention to the cultural core which comprises social and religious arrangements as local groups' adaptations to their specific ecological settings. Within the present contexts of many economic and political changes, this article is to propose some possible approaches for future cultural studies in Vietnam.