Undoubtedly, parents of children with disabilities are better knowing than anyone else about their children's development and progress. Therefore, considering their perspectives on the services may lead to enhancing service delivery to their disabled children. In this paper, we described the procedure of developing an instrument for measuring parental satisfaction with the services that disabled children and their parents received. The scale developed in the current study consists of five dimensions: Medical care services, accessing to services, special education institutions, parental involvement, and available support. The scale items construct was based on three resources: Reviewing literature, semi-structured interviews, and asking professionals. The results show that the validity and reliability of the scale are satisfactory.