同许多民族的发展史一样,在远古时期,藏族先民们散居于许多互不相属的独立部落,并未形成统一的民族群体,对那个时代的情况我们只能通过大量的神话、传说、文学作品及藏文史籍来了解,大约在公元前十世纪,青藏高原上已有蕃(雅隆)、苏毗(孙波)、羊同、党项、白兰、附国,突厥、吐谷浑等独立的大部落,公元前四世纪,众多的部落逐步形成象雄、雅隆、苏毗三大部落联盟。当时处于藏文化的奠基时期,其文化主流以产生于象雄的本教文化为基础。《西藏王统记》和其他历史典籍都认为至少在公元七世纪初松赞干布建立奴隶制王朝以前,藏族没有文字,因此当时调整社会关系的行为规则没有成文形式。据《贤者喜宴》记载,从西藏第一个王,公元前四六九年(实际是雅隆部落的首领)聂赤赞普开始,至公元前一百年左右的布第公杰(或称甲 Like many nationalities in their history, in ancient times, Tibetan ancestors scattered in many independent tribes that did not belong to each other and did not form a unified ethnic group. We can only pass a large number of myths and legends about that time. Literary works, and Tibetan history books. About the 10th century BC, there were already large independent Tibetan bigplaces such as Fan (Jarong), Supian (Sun Bo), Sheep Tong, Party Items, Prynne, Fuguo, Turks and Tuyuhun Tribe, the fourth century BC, a large number of tribes and gradually form the elephant, Yalong, Soviet Union three major tribal alliance. At that time, in the foundation period of Tibetan culture, the mainstream of its culture was based on the teachings and culture that emerged from Xiang Xiong. Both the Tibetan Wang Tongji and other historical texts held that at least before the establishment of the slavery dynasty by Songtsan-Gampo in the early seventh century, there was no written Tibetan language. Therefore, the rules governing the social relations were not written at the time. According to the “Sage Wedding Banquet”, from the first king in Tibet, in the fourth and ninth years of BC (actually the leader of the Yalong tribe) Nie Chezap,