Under the background of educational psychology, the integrated development of ideological and political education and mental health education in colleges and universities provides a new path for improving the all-round quality of college students. Based on the theoretical framework of educational psychology, this study proposes a method system to promote the coordinated development of ideological and political education and mental health education in colleges and universities. By introducing a multi-level mental health support system, a model of integration of ideological and political education theory and practice, and the comprehensive application of big data and artificial intelligence technology, this paper starts from the following aspects: first, embedding elements combining psychology and ideological and political education in campus activities to expand students' understanding of the relationship between psychology and moral decision-making; second, building a cross-disciplinary teaching team to provide multi-dimensional educational support through the collaboration of psychological counseling and ideological and political guidance; third, using intelligent education platforms to conduct data analysis to provide a basis for personalized educational decision-making. Research shows that this multidisciplinary education model can effectively alleviate students' psychological problems, cultivate healthy values and social responsibility, thereby promoting the coordinated development of students' mental health and ideological and political quality, and providing theoretical and practical references for the reform and innovation of higher education in the new era.