Multimodal AI technology provides a new opportunity for the application of the production-oriented approach (POA), especially in reading and writing teaching, AI can enhance the teaching effect and learning motivation by generating authentic communicative scenarios, production difficulty diagnosis and personalized feedback. This paper investigates the application of production-oriented approach (POA) supported by multimodal AI technology in English literacy teaching in colleges and universities. Through experimental comparisons, it explores how the AI-driven teaching mode motivates students’ learning and enhances their writing ability. The experimental subjects were two classes (English 1 and English 2) in a college in city B. Class 1 was taught with the AI-supported POA method, and class 2 continued to use the traditional teaching method. Students’ affective experience, cognitive level and behavioral tendency changes were assessed through qualitative and quantitative analyses of questionnaires and pre and post writing tests. The experimental results showed that the AI-assisted POA method significantly increased students’ learning interest, confidence and writing performance. The students in the experimental group increased 13.57% and 14.07% in the scores of learning interest and confidence, respectively, while in the writing achievement, the mean value of the experimental group was 18.45, higher than that of the control group, which was 14.24, and the difference was significant (p<0.05). The multimodal AI-based teaching model effectively improved students' writing ability and learning motivation, indicating that the combination of POA teaching method and AI technology has good educational potential.
