First of all, college students have high knowledge and control over themselves, so in most cases, their emotions will be relatively stable, but college students are in a youthful period with rich emotions, complexity and profound experience. Therefore, the ups and downs of emotions are sometimes relatively large, which is manifested in the ups and downs of emotions.

Secondly, compared with senior high school, the proportion of college students studying in university is less, so other aspects such as making friends, working part-time, getting along with teachers, and community work will also take up part of the time, so they will have rich experiences and experiences in university, which will bring all kinds of emotional experiences.

Finally, there are stages and levels between the lower grades and the higher grades. Freshmen have just arrived at a new campus, and their hearts must be full of curiosity about new things and the gap with ideal university life. As for juniors and seniors, they have been on campus for some time and will soon face the pressure of work, employment and life, so senior students will definitely be more calm and mature.