The family as an important institution and the foundation of society, has always attracted many scientists and has been and remains the subject of many studies. Looking at the modern family is evident plural of its forms and its shapes, as well as the complexity of its concept. The central part of this work include families of children with disabilities, which unfortunately today are not unknown and they are more often referred in the literature as well as in a various research. A child with disabilities brings stress, new appointments and a number of changes in his family which implies changes in the way of its functioning. If we look children without and with disabilities, we can see that most of children with disabilities require more attention, energy, time, physical and mental efforts of parents, and therefore parents of children with developmental disabilities they have to make effort to create a healthy balance between the role of the partners and the role of parents, which can be serious test of their relationship. The aim of the research carried out the purpose of this paper was to examine relationships in families of children with developmental disabilities, or whether and how the birth of a child with disabilities affected the lives of parents and their marital and family relations. The results showed that the birth of a children with disabilities affected the marriage of majority of examiners, as well as the fact that the most of examiners have a successful and happy marriage, while only a few examiners thinking about a divorce. Examiners confirmed in a one hundred percent that their happiest moments are those that they spend in their families, which indicates that they are satisfied with their families.