人工智能与平台算法的深度介入正在重塑微短剧的国际传播格局，为中华文化对外叙事开辟了新的表达空间。在此背景下，“轻量化”叙事逐渐成为跨文化传播中的关键方式，其意义不仅体现在短时长与强感知带来的媒介优势，更体现为在跨文化语境中提升传播效率与稳定性的潜力。以中央广播电视总台出品的5部共19条AI技术支持下的微短剧为研究对象，基于多模态话语分析框架，系统考察“轻量化”叙事逻辑与策略。结果显示，AI多模态协同机制推动叙事通过“轻事件化”“轻情节化”与“轻语言化”策略，实现文化内容的跨文化转译；“轻量化”叙事所具有的情绪导向、节奏统筹与符码凝练等高效表达机制，能够增强意义即时感知与跨文化可理解性，为构建具有全球感召力的中国叙事模式提供理论依据与实践路径。

The deep involvement of artificial intelligence and platform algorithm is reshaping the international dissemination pattern of micro dramas,opening up new expression spaces for the global narrative of Chinese culture. In this context,“lightweight” narrative is becoming a key approach in crosscultural communication. Its significance lies not only in the media advantages brought by short duration and strong perception,but also in the potential to enhance communication efficiency and stability in crosscultural settings. Based on CCTV's(China Central Television)five AI-supported micro dramas,totaling19 episodes,the generation logic and expression mechanism of lightweight narrative are systematically explored from the perspective of multimodal discourse analysis. The results show that the multimodal AI collaborative mechanism enables narratives to achieve cross-cultural translation of cultural logic through strategies of “lite event,”“lite plot,” and “lite language.”“Lightweight” narrative showcases efficient expression mechanisms such as emotional orientation,rhythm coordination,and code condensation. They can enhance the immediate perception of meaning and cross-cultural comprehensibility,which provides a theoretical basis and practical path for constructing a globally appealing Chinese narrative model.