Acculturation in psychological studies concerns the process in which different cultural groups undergo psychological and behavioral changes under the impact of cultural differences in their direct contact with other cultures, which reflects the coordination between individuals, local culture and foreign cultures. This process will exert a huge influence on the individual, not only in physical and mental health, but also in interpersonal communication and other social and cultural issues. With rapid development of tourism, ethnic areas are flooded with a large number of tourists and face the increasing shock of Han culture, in which local residents will inevitably experience acculturation pressure in crosscultural communication. If acculturation fails, residents in ethnic tourist destinations will either become self-enclosed, or will be driven by economic interests and cater to the tourists' public preference by commercializing their own culture and presenting ″pseudo-folklore,″ both of which will ultimately affect sustainable development of ethnic tourist destinations. Relevant literature review reveals that there is little psychological research on ethnic groups' acculturation, and that acculturation in the context of tourism has drawn little attention by academia. Thus, this research has some practical and theoretical value.The thesis selects Zhaoxing Dong Village Liping in southeast Guizhou province as a case study and applies Canadian cross-cultural psychologist Berry's(1997)bidimensional acculturation theory from the perspective of psychological research to analyze the acculturation of residents in the ethnic tourism destinations at the individual level based on unique cultural context of tourism development of Zhaoxing Dong Village. With literature review, field surveys, interviews and other methods, this thesis starts from the types of acculturation and investigates the acculturation of the local residents and the differences in their intention of supporting tourist industry. On the basis of the empirical research, the countermeasures are discussed, in order to promote ethnical groups' positive acculturation and support for the tourism. This research mainly includes the following three aspects:First, Berry's(1997)acculturation theory is used to explore the types of local residents' acculturation in tourist context. Second, the relationship between social demographic variables and acculturation is analyzed. Third, based on the residents' acculturation types, the differences are analyzed between acculturation types in their emotional attitude toward tourists and their intention of word of mouth marketing. The results are drawn as follows:(1)There are four types of acculturation in cross-cultural interaction between residents in ethnic tourist destinations and tourists: ″integration″ ″assimilation″″separation″and ″marginalization″ of which the former two represent high acculturation, while the latter two mean low acculturation. The residents of Zhaoxing Dong Village Liping, show high level of acculturation, as the majority belongs to the ″integration″ type,which is the best state of acculturation.(2)Among the local residents, there is a significant difference between men and women in types of acculturation, with women having a higher level of acculturation while there is no remarkable difference in acculturation between residents of different ages or educational backgrounds.(3)The residents of high acculturation hold positive emotional attitude toward tourists and stronger intention of word of mouth marketing than those of low acculturation. At the end of the thesis, it points out shortcomings and prospects of the research in an attempt to find out better local research tools and contents in line with requirements of the situation.