College Students suicide crisis affairs take place continuously, bringing great concern of the boundary to public and college. It is a valid path for high school to construct the crisis early warning and intervention system, which can prevent and reduce the students suicide crisis affairs. With a practicality work, this article sets up to do some thinking about aspects such as the concept of crisis early warning and intervention, the way of thinking to set up the system about crisis early warning and intervention in high school etc, and also do some thinking about how to construct that way.