The purpose of this study was to find out the reasons for the petition (itsbat) of marriage and the constraints faced in the implementation of itsbat marriage in Bantul regency. This research is done by research method in the form of library research and also conducted field research. In library research, this research used document study to get secondary data, furthermore, field research was done to obtain primary data within qualitative approach that was by conducting interview. Data, which was obtained from the results of literature research and field research, were analyzed qualitatively. The data were further elaborated with descriptive method of analysis, ie in discussing the problem was by identifying, analyzing and interpreting data that has been obtained to be taken a conclusion.