With the rapid development of artificial intelligence technology, a new high-paying profession has quietly emerged - AI Trainers. The rapid growth of this industry not only reflects advances in AI technology but also reveals the challenges faced by current AI models and future development directions. In the early stages of AI development, model training mainly relied on low-cost workers to perform basic data labeling tasks. However, with the intensification of AI competition and the increasing complexity of models, the demand for high-quality AI trainers has surged. These trainers are no longer limited to undergraduates but include practicing physicians.