The role orientation of college teachers has always been a mirror image of the changing times,reflecting social needs,technological progress and the evolution of educational ideas.At present,artificial intelligence technology is reshaping the education ecology with unprecedented strength,and it also poses a severe challenge to the role positioning of college teachers.Under this background,this paper discusses the positioning and reconstruction of college teachers'role in the era of artificial intelligence.By analyzing the penetration and application of artificial intelligence in the field of college education,this paper finds out the multi-dimensional role dilemma faced by teachers,and puts forward the path and measures of role reshaping from the aspects of role diversity transformation,deepening the interaction and emotional connection between teachers and students,and cultivating the comprehensive quality to adapt to the AI era.