The Biography of King Gesar is the longest epic ever discovered in the world. It is not only a melting pot of ethnic cultural diversity, but also a witness to the sustainable development of multi-ethnic folk culture. This multi-ethnic oral epic is the crystallization of grassland nomadic culture, representing the highest achievement of ancient Tibetan and Mongolian folk culture and oral narrative art, and its singing and performance have been inherited by countless bard generations. It has a long history, magnificent structure, vast volume, rich content, magnificent momentum and wide spread. Gesar, as an immortal heroic epic, was produced and developed on the rich basis of ancient Tibetan myths and legends, poems and proverbs, providing valuable primitive social forms and rich materials, representing the highest achievement of ancient Tibetan culture, and at the same time being a visualized ancient one.