There is a growing concern about students’ psychological health at school with mounting pressure as students approach middle school or college age. In light of the fact that the current means of psychological intervention are basically manual intervention, this research explored the possibility of using technology to assist psychological intervention. An emotion management system is thus implemented to provide facial emotion cognitive service and video diary function. In addition to the advantage of keeping a normal diary, students benefit by regulating their emotion when they are recording videos. Teachers can keep track of students’ emotion states so that they can provide corresponding psychological supports when students showed signs of mental disorders. We performed a small-scale pilot study at a local school with satisfying results.