The digital protection and transformation project of the national intangible cultural heritage "Ten-mile Red Dowry" adopts spatial intelligence collection devices to conduct millisecond-level time-series recording of artifacts such as ten-thousand-work sedan chairs and thousand-work beds. Combined with large AI models, it realizes 1:1 digital restoration of stitching techniques with an error margin controlled within 3%. Relying on the intangible cultural heritage data trading platform, the digital craftsmanship of Ten-mile Red Dowry is authorized to cultural and creative enterprises for the development of trendy toys and cultural and creative products. Since its implementation for one year, the project has increased the income of inheritors by more than 40%, achieved an annual sales volume of over 10 million RMB for developed cultural and creative products, and cultivated more than 50 young digital inheritors. It realizes the organic integration of precise protection, living inheritance and efficient industrial transformation of intangible cultural heritage skills.