National culture is the sum of material culture and spiritual culture with national characteristics created and developed by a nation in the process of social development. Any national culture is created by the nation under specific environmental and historical conditions, showing specific types and essential differences from other national cultures. Developing minority cultures is conducive to national unity, social harmony, national unity and spiritual civilization construction. In the long historical development process, 56 ethnic groups in China have formed their own unique lifestyles, beliefs, personality, customs, customs, festivals and celebrations. It constitutes different cultural patterns and characteristics of all ethnic groups. As an ideological culture, its expression, dissemination and rich development also depend on the corresponding media, such as national language, press and publication, film, television, drama and other cultural facilities. The quantity, quality, type, scale and technical level of cultural facilities depend on the development of economy and technology, and slow economic development will restrict the development of cultural undertakings. On the contrary, culture is the forerunner of economic development. Cultural backwardness not only restricts economic development, but also has a negative impact on the quality of spiritual life, population quality and even national unity and social stability of people of all ethnic groups. Therefore, the development and prosperity of national culture is an important content and condition of national prosperity and progress, and the speed of cultural development is an important symbol to measure economic development. Because the overall social structure of any nation is the unity of politics, economy and culture, any social phenomenon is the result of the development of these three contradictory movements. Therefore, to measure the development level and progress of a nation, we should not only analyze it from the political and economic aspects, but also pay attention to the development of national culture. In the long historical development process, all ethnic minorities in China have formed their own unique cultures with different styles. In new China, the traditional cultures of ethnic minorities are respected and protected, and all ethnic groups are free to maintain and develop their own cultures. In order to protect the traditional culture of ethnic minorities, the state systematically collects, sorts out, translates and publishes the cultural heritage of ethnic minorities, and protects the scenic spots and historical sites, precious cultural relics and other important historical and cultural heritage of ethnic minorities. By establishing minority literary and art groups and art colleges, the state vigorously cultivates minority literary and art talents, prospers minority literary and art creation, and develops minority cultural and artistic undertakings.