The role of interpersonal communication in the growth of college students: interpersonal relationship is an important way to exchange information and acquire knowledge. Modern society is an information society with a large amount of information and high information value, which is unprecedented. People's demand for all kinds of information and information utilization increases with the increase of information quantity. Through interpersonal relationships, we can transfer information and achievements to each other, enrich our experience, broaden our knowledge, broaden our horizons, enliven our thoughts and inspire our inspiration. Mutual communication is an important means for individuals to know themselves and improve themselves.

Confucius once said: "A person who studies without friends will be lonely and seldom ask questions." Interpersonal relationships help to enhance our understanding of ourselves and others. In the process of interpersonal communication, I know each other from their manners. At the same time, the other party knows himself in his own reaction and evaluation. The wider and deeper the scope of communication, the more complete the understanding of each other and the deeper the understanding of yourself. Only by fully understanding others and deeply understanding yourself can we get others' understanding, sympathy, care and help and realize self-improvement.

Interpersonal relationship is the need of collective growth and social development, and interpersonal relationship is the link to coordinate collective relations and form collective strength. A good group can promote the formation of young students' excellent personality. Sense of justice, compassion and optimism are all grown up in democratic, harmonious and friendly interpersonal relationships. Good interpersonal relationships can also enhance students' collective cohesion and become the most important educational force in the group. Interpersonal relationship is the interaction between people. Good interpersonal skills are positive, on the contrary, it is not conducive to the all-round and healthy development of individuals.

Characteristics of college students' interpersonal communication: horizontal relationship: the horizontal interpersonal relationship of college students refers to the interpersonal relationship established between college students and friends of the same age, while the vertical relationship refers to the interpersonal relationship with parents, teachers and other people of different ages. College students pay more attention to peer relationship than their parents or other adults. On the one hand, this is because of the further development of college students' self-awareness, on the other hand, because they have more similarities with their classmates and friends of the same age in physiology and psychology, and more similarities in ideals, hobbies and wishes.