【Objective】 To explore the situation of the character and the behavior problems of the prisoners' minor children and the relationship with social support. 【Methods】 20 prisoners' minor children were selected by handy sampling consisted experimental group and ordinary left-home Minor Children by cluster sampling consisted matched group by maximum matching method.Eysenck Personality Questionnaire,Conners Parent Rating Scale and Social support scale were used to test the Children. 【Results】 1)The mean rank scores of the behavior problems of experimental group were significantly higher than that of comparison group(all P＜0.05).The mean rank scores of the neuroticism of experimental group were significantly higher ,but the lie were significantly lower than that of comparison group(all P＜0.05 ).2)As for the experimental group,Significant negative correlations were found between hyperactive impulsive disturbance and the objective support,between the psychoticism and the subjective support and between the introversion- extroversion and objective support(P<0.05).Significant positive correlations was found between the hyperactive impulsive disturbance and the support utilization(P<0.05).3)The support utilization was the significantly positive predictor for the hyperactive impulsive disturbance(β=0.52,P=0.02).The subjective support was the significantly negative predictor for the psychoticism(β=0.48,P=0.03). 【Conclusions】 The Prisoners' Minor Children have several behavior and character problems.The social support effects their behavior problems and character.