This study focuses on the urban cultural influences of Al-Andalus spanning 92-478 AH / 711-1085 CE. Addressing the understudied topic of non-core cities in existing historical research, it selects four sample cities: Alcalá de Guadaíra, Madrid (Majrīt), Murcia, and Granada. The study aims to clarify the constructive role of these cities, which operated outside the core capital system in the civilization of Al-Andalus. This study adopts historical analysis to trace the origins, administrative evolution, and developmental trajectories of the four cities, and analyzes their contributions to the fields of agriculture, industry, trade, and science and culture. The study finds that all sample cities supported regional political stability and integration, and served as core economic nodes for irrigated agriculture and handicraft industries. Meanwhile, the four cities exhibit clear functional differentiation: Murcia and Granada developed into core scientific and cultural centers, while Madrid (Majrīt) and Alcalá de Guadaíra undertook military and administrative functions including border defense and urban governance. This study ultimately concludes that small and medium-sized cities in Al-Andalus were a core element of the civilization’s construction, and the omission of these cities in traditional research must be remedied through a comprehensive reexamination of historical sources.