Celi scripts on the portal of Karatay Madrasa consist of three distinct groups of inscriptions: build inscription, prayer (verse) inscriptions and hadith inscriptions. These Arabic inscriptions had been studied on their pronunciations and meanings in many articles, but it hadn’t been carefully analised in detail calligraphical dimension. With the help of analyse of these celis, it will be revealed the dating of the building and will be exposed many obscurities on the Islamic Calligraphy