Objective? To explore the effects of positive discipline training model-based family nursing in children and adolescents with emotional disorder. Methods? From June 2016 to December 2017, we selected 74 children and adolescents with emotional disorder as subjects in Wuxi Mental Health Center by convenient sampling. All of the patients were divided into research group (n=37) and control group (n=37) with the method of the random number table. Two groups were all treated with Sertraline. Research group also carried out positive discipline training model-based family nursing for 24 weeks. Control group carried out rountine care. We compared the scores of Hamilton Anxiety Scale (HAMA), Hamilton Depression Scale (HAMD), Egma Minnen av Bardndosnauppforstran (EMBU) and Parent-child Relationship Test (PCRT) of patients between two groups. Results? Before intervention, there were no statistical differences in the scores of HAMA, HAMD, factor scores of EMBU and subscale scores of PCRT (P＞0.05). After intervention, the scores of HAMA and HAMD of research group were lower than those of control group with statistical differences (P＜ 0.05); there were statistical differences in the factor scores of EMBU except for preference factor between research group and control group (P＜0.05); the subscale scores of PCRT of research group were lower than those of control group with statistical differences (P＜ 0.05). Correlation analysis showed that the score of rejection-scale of PCRT had positive correlations with the scores of mothers' punishment and sternness, and had negative correlations with the scores of emotional warmth and preference; the score of dominance-scale was positively correlated with the scores of mothers' punishment and sternness, over interference and protective factor, and was negatively related with the score of emotional warmth; the score of protective scale had positive correlations with the scores of emotional warmth, over interference, protection and preference, and had negative correlation with the score of mothers' punishment and sternness; the score of obedience-scale was positively correlated with the scores of mothers' emotional warmth and preference, and was negatively related with the scores of mothers' punishment and sternness as well as rejection. Conclusions? There are improperly parental rearing pattern and bad parent-child relationship in family of children and adolescents with emotional disorder which has correlation with each other. Positive discipline training model-based family nursing can improve family communication, family atmosphere, parent-child relationship and patient's condition by improving parental rearing pattern.