College students are in their early adulthood (18 -40 years old) and are in a period of conflict between intimacy and loneliness. People in this period hope to establish close relationships with others, such as falling in love. If they can't establish close relationships with others, they may fall into loneliness. The previous period of early adulthood is adolescence (12 years old-18 years old), which is in the conflict between self-identity and role confusion. In fact, many college students have not dealt with the previous moment.