Today the curriculum of social science courses in Iran includes eight branches: social science research, social planning, cooperation and social welfare, social services, anthropology, social communications, public relations, and social work. But in advanced educational systems in the world, including America, Canada, Australia and most European countries, the social science has a broad category that typically includes sociology, anthropology, economics, political science, psychology, and geography. In this study, an attempt was made to design an Interdisciplinary Curriculum Model to Undergraduate Social sciences by using the theoretical knowledge of Interdisciplinary Curriculum design, studying the current condition of social science curriculum in Iran and the world generally and interviewing social science experts. These interviews are done by the general interview guide approach. Mainly qualitative data analysis was used that included a three-step process (derived data, supply data and the interpretation and analysis). The results of the study include an interdisciplinary model that has been validated from the perspective of curriculum and social sciences specialists. In the validating process of model we used a qualitative method that recognized "focus groups research methods".