Systematic judiciary was not known to the Arabs until the beginning of Islamic era. Tribe's Sheikh was to deal with any conflicts, deriving his holdings from old traditions. However, Muslims' systematic judiciary was using definite rules derived from The Holy Qur'an and the Prophetic ḥadith-s. This paper issues the judges' costumes and how they were mostly different from one era to another. Since the 5^th century A.H, special types of cloth were to distinguish a judge's position; which he must takes off if he was discharged. Of these, pallium (ṭailasān), Ad-Dūnaiyah, Qūrqūfa, black turban or ‘Emama, etc. Referred improvement is drawn out the archaeological manuscripts of these historical eras. This research aims to: (1) illuminates on the beginning of systematic judiciary in the Islamic epoch, (2) emphasizes the importance of costumes in characterizing judges from other employers, and (3) describes the judges' uniform and its improvement through several eras of the Islamic epoch.