Youth male ganging culture is a common social phenomenon in urban Sri Lanka. Because of the social stratification and due to ethnic differences, protracted war, poverty and political structure, that growing tendency of youth unrest emerged. Gangs have associated with both married and unmarried youth who considered their family is the gang. Married youth do not have particular concern on basics elements to affirm family bondage. According to this situation the behaviour and the role of gang members’ wives have been changed and through that their family background and lifestyle are also changed. This paper tries to reveal how the youth male ganging in urban Sri Lanka affect for the behaviour and the role of gang members’ wives, aiming to identify how youth ganging affect for the behaviours and role of gang members’ wives. The Research focused on 164 identified wives above 201 gang members’ family, belonging to 75 gangs within 14 GN divisions in Colombo city, within the age group of 18 – 32 years. All the said gangs were identified through snow-ball technique, random sampling and observations. They were interviewed using informal and formal group discussions and case studies were also used. Results showed that the empathy of the gang based on their environment and education level. Further lower education level effect to the discipline of the gang. Because of that they treat their wives based on lower wisdom. The true factor there was the members could manage their emotional depressions while reaching their objectives via own gangs. The inter-relationship within family members of youth gangsters’ shown wider gaps and the expected functionalities of the family setting is not happening at all. Wives play the major role of family by taking the responsibility of their children and family income. Therefore most of them do illegal activities as they couldn’t involve in respectful job due to lifestyle and low education. Most of them engage in drug related income avenues and do drug related illegal activities. Therefore the rate of those who were summoned by the police also became higher. Children in these families didn’t have childhood and juvenile delinquency is common among those children. In all the youth ganging culture in urban Sri Lanka affect for the changes of their wives behaviour and role.