With low cost, wide audience and great publicity influence, it can not only spread the intangible cultural heritage, but also generate movie box office revenue, which can serve multiple purposes. In the field of cultural communication, food culture includes "Food on the Tip of the Tongue", regional culture, "Aerial Photography of China", historical culture and "National Treasures". The theatres of historical knowledge are all presented through films or plays, which have achieved good ratings and found vitality for the revitalization of traditional culture. Successful experiences can also be replicated in the dissemination of intangible culture.

the most important thing of intangible culture is not the finished product effect, but the complexity, inheritance and naturalness of the production process. In terms of quality, industrial printing and dyeing, embroidery stitches may be more delicate than manual production, so if it is only the retail of craft products, the market demand and promotion of intangible products with complex technology and high cost are not as good as industrial products.

Therefore, the promotion of intangible culture must find its unique place, that is, the pure natural raw materials and the complex and sophisticated production technology. The intervention of the film can start from the perspectives of material selection, production, polishing and sales, which can not only show the past lives of intangible culture, but also show the present situation and predicament of intangible culture. While praising the old craftsmen for adhering to the craft inheritance, they also call on young people to actively join the ranks of successors of traditional culture and promote the inheritance of intangible culture. The detailed recording of the production process of the film also makes people understand the intangible heritage more deeply and meticulously.

Secondly, compared with newspaper submission, the film only needs to truthfully record the production process of intangible cultural heritage, and with the strong support and investment of the state and the help of domestic film protection month, the film can ensure the audience base and lay the foundation for the spread of intangible cultural heritage in the process of public understanding and growing love. For low-cost movies, even a beautiful documentary can be edited with a mobile phone. Now, in the Internet era, the traffic of short videos is increasing year by year, and the platforms for video delivery are becoming more and more diverse. The low investment in the early stage and the broadcast volume of hundreds of thousands or even millions of people in the later stage show that the propaganda method of movies is undoubtedly the most cost-effective means.