This study aims to examine the oversight on the constitutionality of laws in Jordan in the light of the relevant constitutional provisions. The doctrinal approach is used in this study, where the primary data were collected through the provisions of the Jordanian Constitution and laws as well as the ruling of the Jordanian constitutional court. The study addresses the importance of the oversight on the constitutionality of laws, the provisions of the Jordanian Constitution relating to the Constitutional Court, and then the decisions and rulings of the constitutional court.The study concluded that the legal and constitutional provisions relating to the Jordanian Constitutional Court, , together with the Court's commitment to formal procedures have negatively affected the Court's role in monitoring the constitutionality of laws and its presumed role in protecting the rights and freedom of Jordanians.