Abstract: AIGC (Artificial Intelligence Generated Content) technology poses systemic challenges to digital creative education, primarily manifested as the weakening of students'subjective awareness and the homogenization of creative expression in their work. Based on project-based learning, this study constructs a Dual-Helix Iterative (D&I Mode) teaching model that emphasizes mandatory interventions in the value chain. The core of this model lies in the cross-iteration between the efficiency chain and the value chain, aiming to strategically shift the focus of creation toward cultivating higher-order competencies such as creative planning, aesthetic control, and emotional infusion. Through practical application in the digital video production course, the D&I Mode has significantly enhanced students'creative uniqueness and artistic expressiveness, while also improving human-AI collaboration efficiency. This model provides an operable and concrete teaching approach to address the issues of creative homogenization and the weakening of subjectivity in the context of AIGC.

Key words: AIGC, Project-based learning, Double-helix iteration, Curriculum reform, Human-AI collaboration, Efficiency chain and value chain