Abstract: The coming of the AI age when artificial intelligence and human intelligence coexist demonstrates the transformation of the conventional education that centers on memorizing, knowledge acquiring and future job training and results in the invalidity of the diploma's signaling function and a more severe situation of knowledge-producing pattern renewal. Only if the idea of college and university teacher development that emphasizes "going back to humanism", lifelong learning and corporation with AI technologies with a reasonable and positive attitude is highlighted and upheld could the transformation of traditional teachers into qualified teachers who know students and act as "analysts", "curriculum designers" and "world-connecting planners" take place at the age of AI. Consequently, the future route of college and university teacher development lies in achieving the man-machine coordination in the face of AI technologies, restructuring curriculums in the face of real life, establishing a community for teachers in the face of the world and giving students profound instructions in a "responsibly innovative way" under "the guidance of the humanistic spirit" in the face of the future society.