Adoption is the second best form of founding families, which allows the child to grow up in a safe and stable environment. Before the establishment of adoption is necessary that child and adoptive parents go through the process of preparing. The process of preparation is extremely important for the child's adjustment to the adoptive parents and the establishment of relations and attachment. In other hand, the child is faced with numerous challenges during the process of preparation. The aim of this research is to gain insight into the challenges that professionals face in the process of adoption and in their suggestions for improving the process. There was conducted semi-structured interviews with experts from the Zagreb Children's Home, SOS Children's Village Lekenik and with experts from the association "The other way". Experts have their own experience of the process described as necessary and to take some time for the implementation of the main challenges of the preparation process are; child dealing with the past, insufficient education professionals from CSW, unrealized adoptions, failed adoption, care about hereditary predisposition child, forced termination of contacts with the family, adoption from foster care and adoption in the interest of the child. In the study we also make suggestions for improving the process of preparation of the Republic of Croatia. The results point to the need of quality and continuing education of professionals from CSW, shortening the administrative works, development of protocols on the treatment and the introduction of probation accommodation.