A study has shown that children and adolescents with conduct disorders have multiple family dysfunctional and psychopathic traits. Family functioning and psychopathic traits play a combined role in the development of conduct disorder. A case-control study of 99 adolescents with conduct disorder and 71 normal control adolescents was conducted at the Shanghai Research Institute, using the Family Functioning Assessment Questionnaire (FAD) and the Antisocial Screening Scale (APSD), and correlating the two. The results were that the character disorder group scored higher than the normal group on the FAD total family functioning and communication, role, emotional involvement, and problem solving factors, with statistically significant differences; the APSD scale scores were higher than the normal group on the total score and the indifference and unemotional, narcissism, and impulsivity factors, with statistically significant differences. The correlations between apathetic traits and family functioning were not significant, narcissistic traits were positively correlated with emotional involvement at low levels, and impulsive traits were positively correlated with emotional involvement, emotional response and behavioral control at low levels.