Adoption is directed by family law as the obligations of the party in process. The basic principle on which relationship must be founded is the principle of the best interest for the child. It must be assumed that the child needs a family and then that parents need a child. During the process it shouldn't be put the priority of adoptive parents in front of child's needs and wishes. The adoptive parent may be a person as an individual, a person in marriage, cohabitation as well as other spouse of common-law partner, who wants to adopt a child of other partner. The process of adoption is based at the Center for Social Welfare and the party in the adoption process are the child and the most suitable adoptive parent. Center for Social Welfare chooses the most optimal adoptive parent in the register of potential adoptive parents according to child needs and the professional judgment of eligibility and suitability of potential adoptive parents. Before making any decision the competent institution are obligated to prepare the child to the new situation and insure him/her to spend some time with the most suitable adoptive parents. The most suitable adoptive parent is obligated to take care of the child daily. Adoption between the most suitable adoptive parents and foster child is based on a decision of the competent Center for Social Welfare. The legal validity of the decision on adoption creates a new relationship in which are adoptive parents entered in the register of births as parents, if the child older than twelve years is not opposed in which him/her has right.