The service program of the “Integrated Vertical Service for Domestic Violence” was implemented by the Yunlin County government and Yun-Xuan fundamental association since 2010. The aim of this research is to find out the working condition of social workers in the program of Integrated Vertical Domestic Violence Service in order to explore its effect and improve mechanisms. The qualitative methodology was applied in this research. Eleven social workers in this program are the research samples and were interviewed for collecting research data. The research found out the following phenomenon while delivering services, including 1) the job has largely supplanted, 2) a great diversity of effect due to selective service, 3) closing clients as soon as possible for avoiding service delayed, 4) clients interviewing by phone calls mainly in stand of interviewing face by face, and 5) using the strategy and frequency of services are according to clients’ crisis degree and their motivations of seeking for help. Furthermore, the services for victims include the risk assessment and relationship building in the initial stage of the service , the precautions ensured victim’s safety and the protection and the linkage of social welfare consulting service. Both offenders and their families are treated in this program. Participants also cooperate with the police in maintaining security and public authority. The implications and limitations are reviewed in this research to provide the suggestions for future research and practice.