In order to understand the categorical characteristics of family function of college students and its relationship with disordered eating behaviors, the Eating Attitudes Test and the Family Assessment Device were used to measure 787 college students, and the characteristics and differences of disordered eating behaviors of college students under different categories of family function were analyzed. The results showed that the family function of college students could be divided into low protection group (12.83%), emotion - high protection group (15.50%), high communication - low self group (20.20%) and medium protection group (51.46%). A family environment with high communication and low selfcentricity may help prevent eating behavior disorders, a family environment with low protection may increase the risk, an emotion-high protection family may have side effects from overprotection, and a family with medium protection may be more conducive to healthy eating.