【Abstract】 Huayao Dai,as the study subject of this dissertation, is famous for each woman of the ethnic group wrapped around the waist by a colorful ribbon. Huajie Festival, the traditional festival of Huayao Dai ethnic group who lives in the middle of Ailao Mountain and the upstream of the Red River, in southern Yunnan Province, is the study object of this dissertation. And Huajie Festival has the reputation of "Oriental valentine's day", because boys and girls love each other in an unique way in the festival. This dissertation is an all-round research on a festival of an ethnic group, so it demonstrates a panoramic visage of festival of an ethnic group.People created culture through nature in the past, but now people reconstruct culture through culture. The author intends to visit the traditional folk festival of Huayao Dai in Xinping Autonomous county for Dai nationality and Yi nationality,Yunnan Province,—Huajie Festival,and to see a new and regenerative of folk culture which is re-constructed. In recent years, Huajie Festival, also named "attending Huajie" and "Oriental Valentine's Day", stands out from the fighting between tradition and modernity, culture and economy. It bases on Xinping, spreads to the Yuxi, Kunming, and even is famed at home and abroad. It has not only become an effective means to spread "local knowledge" and strengthen the characteristics and recognition of regional culture, but also been a "wonderful work "of regeneration and heritage of culture in the process of market economy. It has been seen as a well-known benchmark of culture used in "cultural diversity" .Basing on the metheds of history analysis, interview, participatory observation and other research tools, the author uses the analysis strategy of horizontal and vertical integration, and the research techniques of "deep depiction" and "polyphony" to put Huajie Festival into a "field" of a particular historical time and space, observe the presentation of the logic and mechanism in cultural dimension and social dimension, and explore the various "secrets" in the process of its changes. Certainly, this is the aim of the study that we disclose the "secrets". Of course, the author attempts to reveal the "logic" and the "mechanism" in the process of cultural changes, and explore these "secrets", not out of the curious and also not the impulse to pure-intellectually explore the relationship between "phenomenon" and " essence ", " culture "and" society " but out of its importantance on theoretical and practical significance. For instance, on theory, the study starts from the holiday to analyze the relationship between state and society, and provides a new perspective to study the relationship between state and society; We can understand the relationship between social changes and cultural changes better through studying the production, missing and revival of a festival; The ceremony features of Huajie Festival emboding the interpretation meaning, operation meaning and status meaning, enrich the understanding for symbolic theory on Anthropology and Ethnology. Huajie Festival not only has promoted the local economy, culture and overall social progress, but also provided a strong proponent for today's non-material cultural heritage protection and development theory. In practice, this study has broadened the scope of the study for Dai nationality, enhancen the research level on Huaydao Dai, made up culture studies on the festivals, and expanded the research perspective of festivals. So the study on Huajie Festival from culture resource to culture capital can provide generous help to the ethnic group who doesn't know how to develop. Basing on the study on Huajie Festival, we can deeply understand the cultural of Huayao Dai, ethnic identity, and national identity, etc. Finally, the author hopes the study can give some enlightenment to those who are protecting and developing the Huayao Dai culture.This dissertation is composed of eight chapters. In the introduction, the author discusses the major questions, theoretical foundations, research methods, key points, difficulties, and study significance. In the second chapter, the author describes the nature space and culture space of the existence of Huayao Dai. In the third chapter, after exploring the origins of the Huayao Dai ethnic group and its culture, the author lays emphasis on emerging causes of Huajie Festival and its culture identity. In the fourth chapter, the author describes and analyzes Huajie Festival as a ceremony. In the fifth chapter, the author analyzes the reasons of absence of Huajie Festival at a special time and describes the corresponding changes of marriage customs, festivals, and habits of Huayao Dai at that time. In the sixth chapter, the author focuses on the mechanism of the revival, cultural representation ,and the poetry and politics in the process of representation of Huajie Festival. In the seventh chapter, the author analyzes the guiding functions of Huajie Festival on regional economic, cultural and social progress. The author also summarizes the experience and lessons in pursuit of the qualification of the heritage. At last, basing on the analyses of the major related theoretical issues, the author puts forward a path of cultural development: to achieve cultural freedom on the foundation of cultural consciousness.By the analyses on Huajie Festival of Huayao Dai in Xinping, the author presents the changing process in production, development, missing, and revival of a festival, analyzes the status and role of Huajie Festival in the culture of Huayao Dai,witnesses the situation of protecting and developing Huajie Festival, and foretells the future of cultural development. Thus, the study method of "the overall concept" comes true. At the same time, the author combines "shallow depiction" with "deep description" to seize the profound meaning of culture. The author expands the perspective of culture study by using the latest theory of Anthropology and Ethnology, and the theories of other subjects such as anthropology, ethnology, sociology, folklore, politics and history to understand Huajie Festival. In addition, our predecessors have not done a real anthropological study on Huajie Festival, so the author's study is original in some degree. The analyses on the landmark symbol of "Yangluo Fan", the relations between the country and society reflected by Huajie Festival culture,and the ideas of cultural construction etc.,are inn-Vative on theory and study methods in this dissertation.