The digital development of intangible cultural heritage is becoming one of the research hotspots of cultural heritage. In this paper, we integrate the improved quadratic error metric (QEM) algorithm with the AI technique of multi-layer narrative framework to realize the digital conversion of the mang weaving technique. By introducing the double weighting factors of vertex discrete curvature and local area to optimize the mesh simplification process, the detail retention of the digital model of mang weaving is enhanced. Combine the perception-behavior-emotion threelayer interactive narrative design to construct the digital museum of mang weaving. Practice shows that the Mangzhu digital model of this paper’s method is better than the comparison method in 2 indicators: generation resolution and generation efficiency. There are 80%-100% of the experiencers gave 85 points and above to the digital museum visiting experience. The average satisfaction score of the digital museum was 4.00, 4.00, 4.00, 4.00, 4.00, and 4.25, which is high.
