The protection of the popular culture of local ethnic minorities is an inevitable requirement for building a multicultural system. Through the latest digital technology, through the Internet, digital images, and other technologies, traditional cultural resources are classified and integrated, so that they can be inherited. The purpose of this study is to study the cultural heritage of digitized Miao costumes. This paper introduces the background and importance of the digital protection of Miao costume culture, analyzes in detail the current situation of Miao costume culture, the application of digital protection technology at home and abroad, and analyzes and organizes the research content that introduces the importance of digital protection of Miao costumes. Provide real data support for clothing culture protection. Collect relevant data through questionnaire survey, conduct quantitative statistical analysis, and study the impact of modern cultural communication tools such as television, mobile phones, and the Internet on the inheritance of Miao costume culture under the digital background. The results showed that only 5 of the 216 people were reluctant to use digital dissemination of Miao costumes.