Mongolia people has a long history and a magnificent culture, they ever set up the Mongolia empire, spans Europe and Asia in history, and more, they first ever set up a unified multinational-state whose name is Yuan Dynasty. During the long historical development, now, families of Mongolia people live everywhere in Mongolia altiplano and the country. Among those Mongolian families, Snow Mountain Mongolian who settles at the foot of Qilian Mountain that lies at the west side of West River Corridor and lives on nomadism, creates their unique culture. According to the recordation of historical literature, they are the descendant of Heshuote division of Erlute Mongoliab and offspring of Habu Tusahaer who is the younger brother of great king, Genghis Khan. Since they have moved here for 200 years, they inherited and retained so many traditional Mongolian culture. At the same time, they develop the original culture more colorful and create the Snow Mountain Mongolian culture with abundant connotation and bright characteristic. There is no other Mongolian than Snow Mountain Mongolian who inherited and retained so many contents and formats of the traditional cluture. So, here, firstly by discirbing a picture of Snow Mountain Mongolian traditional culture, the wirter also seeks for effective efforts to reserve this traditional culture. Secondly, because of the strong regional characteristic of Snow Mountain Mongolian culture, the writer tries to understand its uniqueness and more importantly, finds out the general rules of its development.Furthermore, the writer did some case studies in order to deeply understand the current status of Snow Mountain Mongolian culture, especially, the status of traditional culture during the society transformation.Based on the above thoughts, starts from the historical facts of Snow Mountain Mongolian, the writer specifies the Snow Mountain Mongolian culture comprehensively and systematically by plenty reliable history materials and seriously scientific analysis. The main contents of this thesis include the followings:In the first part of the thesis, it introduces the origin of Snow Mountain Mongolian as well as the natural environment they lived on. Also, it tells the origin of the name of Snow Mountain Mongolian, reviews the process of its development and produce.The second part specifies that culture is usually concluded in three levels (tiers): physical, institutional and spiritual level respectively in ethnography and anthropology. The outer one is called physical one. It embodies the relationship between human being and nature, which includes clothing, diet, housing and traffic. The middle one is called institutional one. It embodies the relationship between people, includes political organization, society, family, relatives and educational system. The third tier, inner tier is called spiritual one. It embodies the relationship between human being and super-nature, it includes value, ideology, thinking method, ethic and moral, taste and interest, faith and religion, and so forth. Based on this theory, Snow Mountain Mongolian culture is divided into physical culture, institutional culture and spiritual culture by the writer, more details are given to these three categories respectively in this part.The third part is the case study part of the thesis. To getting the latest information and first-hand material about Snow Mountain Mongolian culture, the writer held two on-site investigations and studies by ways of interview, observation, self-experience and questionnaires etc. Meanwhile, by collecting data and statistic, the writer discusses the current status and future development trends of the Snow Mountain Mongolian culture in this part.The fourth part is a summary of the thesis. Based on the previous parts of the thesis, it sums up three characteristics of Snow Mountain Mongolian culture by comparison study. The three characteristics are: traditional character, regional character and variety character.In conclusion, by taking advantage of theories and methods of...