Ideals and beliefs in education play crucial roles in guiding the education and development of teachers. Teachers who possess strong ideals and beliefs exhibit greater enthusiasm for their work and are less prone to burnout. This study aims to investigate the impact of educational ideals and beliefs on the mental health of university teachers. A total of 615 valid responses were collected through a questionnaire survey, and the analysis revealed significant variations in ideals and beliefs among teachers based on their age and work experience. As university teachers age, their self-affirmation increases, yet they also experience heightened levels of hesitation and anxiety. Teachers with 5 ~ 10 years of experience show more positive attitudes towards their ideals and beliefs. Additionally, the study results demonstrate a significant negative correlation between ideals and beliefs and mental health, suggesting that ideals and beliefs may positively influence teachers’ mental health.