Marriage investigation depends on the content and focus of the investigation. There are many social problems about marriage, such as the choice before marriage, attitudes and views on marriage, and the mode of getting along between husband and wife. College students represent young people with knowledge and education who are about to enter marriage. Different social surveys can reflect the possible trends and problems in the future family, so that sociologists can pay more attention to them. For the college students surveyed, it is to pay more attention to family relations and further understand the internal structure of the family.