Abstract: In order to achieve early detection and early intervention of college students' psychological problems, this paper puts forward the construction of mental health monitoring system, which is composed of early warning information collection, early warning monitoring and intervention treatment. This system includes quantitative and qualitative monitoring. Quantitative monitoring includes psychological scale, economic, academic, physical health and interpersonal relationship status; qualitative monitoring includes speech and deportment, emotion, learning attitude, communication style, discipline and emergency. This system has a guiding significance to maintain the safety and stability of college students and to improve the level of mental health of college students.

Key words: mental health of college students, dynamic monitoring, index establishment