In this paper, the metal electrodes of the brain wave acquisition module are used to sense the bioelectric signals at the forehead and earlobe to analyze the brain waves ?, ? and other five waves, and then obtain information such as concentration and relaxation. The data is transmitted to the ARMCortex-M4 processor through the wireless Bluetooth module, and the threshold filtering algorithm is used to filter and denoise. Based on the theory of positive psychology, construct a structural model of the positive qualities of college students. In a survey involving 7059 participants, we confirmed 96 positive qualities. On the basis of the above investigation, combined with the existing personality theory, a structural equation model with 13 latent variables was established. Later, based on the established model, various factors of positive quality were explained and possible ways to improve the positive quality of college students were explored.