This paper conducts research on the project-based practical teaching of Applied English major in higher vocational colleges based on AI enhancement. During the research process, the application of AI in constructing task scenarios, teaching evaluation, and AI-based evaluation was elaborated in detail, revealing the problems currently faced in practice, such as the lack of data, the increase in teachers' workload, and the rigidity of project evaluation standards. In response to these phenomena, a comprehensive project practice process mechanism with data as the main direction is presented. Establish a normative system for AI-based educational design; Adopt multi-disciplinary project evaluation schemes with AI elements and other solutions. It is expected to provide operational ideas and references for the optimization of practical teaching in the Applied English project in higher vocational education.