The regulation regarding shared custody in the Slovenian legal system differs from the European ones. This paper deals with the purpose of introducing shared custody as a rule in the Slovenian legal system, its advantages and disadvantages and its benefits for the child. The first part of this paper is dedicated to the principle of “the best interest of a child”, which must be respected when deciding in court. Furthermore, this paper presents the forms of shared custody, which, in my opinion, is the appropriate one, the execution of parental responsibility and legal comparative regulation in Europe and around the world. The entire theoretical part of the paper is illustrated with case law and the conclusion consists of my opinion on introduction of shared custody as a rule.