Objective: This article studies the relationship between child abuse by parents and the appearing of wickedness in their children in future. This survey and its questionnaire are framed on observational learning theory of Bandura & Berkowitz (learning of crime and delinquency with observation of parents behaviors by children). Method: The statistical community is the whole of wicked guilty persons who had been delivered to Khuzestan prisons in 2005. The sample consists of eighty-convicted prisoners that were selected randomly, then they responded to child abuse questionnaire and their judicial dossiers were studied. Findings: The main hypothesis was confirmed. There is a significant relation between above variables. The other related variables consist of literacy, single parenthood, and early divorce in family. With reduction in age and literacy of the prisoners, their crime` intensity increased. Subjects mainly (98%) were male because of specific social circumstances and girls position for parents. A great majority of prisoners (90%) refered to being abused by parents (mainly by fathers) in childhood. Result: The abuse consists of child abuse, sexual abuse and neglect or prevention of food and recreation. Coefficient of child abuse questionnaire by even-odd method obtained 82%. The mean of score in the questionnaire was 60 while low and high range was 20-100 respectively. That it was higher than median of questionnaire score. Researchers suggest the formation of a comprehensive social work system with powerful legal & judiciary tools for following, prevention child abuse cases. Other recommendations consist of recording of child abuse in family, planning and teaching child abuse texts for students.