The objective of this study was to assess general trends and gender differences of family value orientation, psychological separation, hope, and marriage attitudes to investigate relationships between related variables. Effective variables affecting marriage attitudes in emerging adulthood university students were also analyzed. Subjects included 299 emerging adulthood university students living in G city. These subjects filled in a questionnaire. Data were analyzed using SPSS 25.0. Results of this study are as follows. First, scores for family value orientation were lower than median, meaning that they had modern family value orientation. Male’s family value orientation showed more traditional than female’s family value orientation. Scores of psychological separation were higher than the median. In psychological separation’s subscale, scores of parental supports were the highest. Hope showed high scores. Scores of marriage attitudes were higher than the median. Male’s marriage attitudes showed higher scores than Female’s. Second, emerging adulthood university students’ marriage attitudes were related to gender, major, the number of dating partners, the existence of a dating partner, family value orientation, psychological separation, and hope. Lastly, emerging adulthood university students’ marriage attitudes were influenced by major, the existence of a dating partner, family value orientation, parental support, and voluntary decision making.