[Purpose/significance] With the rapid advancement of generative AI technologies, prompts have transcend⁃ed their traditional role as mere human-computer interaction interfaces and have evolved into a core competency for navigating the digital age. [Method/process] This study systematically investigates the concept of prompt literacy, tak⁃ing the multifaceted nature of prompts as a logical starting point. Drawing on relevant perspectives from the school of so⁃cial informatics, it explores the theoretical underpinnings of prompt literacy in three dimensions—individual, system,and practice. It also explores practical approaches to improving prompt literacy across society from an interdisciplinary perspective. [Result/conclusion] As a crucial link between human-AI interaction and value co-creation, prompt liter⁃acy exhibits a dual character, encompassing both information practices and technological ethics. There is an urgent
need to develop a theoretical framework rooted in socio-technical practices. This study outlines several directions for future research, aiming to advance both the theoretical refinement and practical development of prompt literacy.