Ancient Chinese poetry is an important source of inspiration for cultural and creative design. However, integrating its emotions into design is difficult, due to the semantic difference between the abstract cultural connotation of ancient poetry and the figurative design works. Therefore, this paper proposes an interaction design method based on extensible semantics and LoRA model, taking fish-related ancient poetry as the research object and Han embroidery as the design element, applying it to teaching practice. First, the semantic vocabularies and semantic illustrations with the largest extensible interval of ancient poetry were obtained through the extensible semantics. Secondly, the LoRA model of Han embroidery style was trained, then the correspondence between the semantics of ancient poetry and the artistic characteristics of Han embroidery was analyzed, to train the LoRA model of Han embroidery style with added semantics. Third, the semantic vocabulary and semantic illustration were applied to the Han embroidery style LoRA model with added semantics and the mid-journey model, to generate diagrams, and the pictures that were not related to semantics were applied to the Han embroidery style LoRA model to generate diagrams. Finally, the Fuzzy Comprehensive Evaluation Method was used to evaluate the generated diagrams. The results of the study show that the interaction design method, compared with the traditional design method, not only helps students to improve the efficiency of design but also promotes cultural heritage and innovation. The application of the method to more cultural elements and design styles can be further explored in the future.