This study examines the neurological functions of oxytocin and aims to reveal educational implications based on the neurological functions of oxytocin. People feel as satisfied and delighted with social rewards as they do with material rewards. Therefore, various social behaviors are carried out. Especially, adolescence is greatly influenced by social exchange in peer group. If they are not selected or recognized by peer groups, they experience emotional problems such as anxiety, depression, and isolation. In the field of neurophysiology, 'Oxytocin' is proposed as a substance related to sociality. Therefore, in this study, we confirmed the neurobiological function of oxytocin in relation to the social brain. Oxytocin improves empathy of people with low social cognitive abilities, recognizes emotions and increases social behavior. It also functions to reinforce social cohesion, such as reducing the sense of rejection toward others and improving the sense of trust. Oxytocin lowers the activity of amygdala, which is related to the fear of the subject and the fear response, to reduce the rejection and increase the confidence of the stranger. It strengthens motives such as pleasure and satisfaction due to social rewards in the ventral tegmental area (VTA) and the nucleus accumbens. Adolescence has widened the scope of social exchanges, and as the desire for belonging grows stronger, it causes severe suffering due to isolation. We recognize that such problems are the problem of the whole class, and we must work together to improve them. By actively engaging in social interaction and enhancing the secretion of oxytocin, it is expected that they can form a class culture that empathizes with each other and forms bonds with each other rather than against each other.