Research on the Digital Personality Customization and Application of Chinese Fashion Clothing under the Background of Fashion Intelligent Manufacturing and Cultural Integration

China's national fashion clothing industry is booming, attracting the younger generation of consumers, especially the post-90s and post-00s. One of the driving forces of this trend is the pursuit of personalization and cultural connotation by the new generation of consumers. They seek the expression of spiritual identity and cultural values of clothing, and digital personalization provides them with opportunities to realize these needs. However, the national fashion clothing industry still faces challenges, such as product design homogenization and lack of digital transformation. In order to solve these problems, this paper proposes an innovative path based on fashion and intelligent manufacturing. First of all, by building a library of Chinese elements and patterns, Chinese cultural symbols are integrated into the national fashion clothing design to realize cultural empowerment and personality characteristics. Secondly, through the digital body database, we can improve the fit and quality of personalized customized clothing and meet the needs of consumers for virtual fitting. Finally, through the four-library virtual digital intelligent customization platform, the design efficiency and resource sharing are improved, and the high-quality development of the industry is promoted. These innovative paths will promote China's national fashion clothing industry towards a digital future, improve product personalization and cultural connotation, meet the needs of a new generation of consumers, and promote industrial upgrading and transformation. By emphasizing the key role of the integration of science and culture in the national fashion clothing industry, it provides an innovative way for industrial upgrading and meeting consumer needs.