Deep-ultraviolet (DUV) light communication can effectively resist solar noise and electromagnetic interference across complex electromagnetic scenarios. However, mobility is still a crucial issue that hinders its application. Here, we integrated visual-tracking features with DUV light communication systems, consequently proposing a mobile deep-ultraviolet light communication (MDUVLC) system under the transmission control protocol/Internet protocol (TCP/IP) scheme. The MDUVLC apparatus is finally employed on drones and land vehicles, with real-time video communication between these moving nodes experimentally demonstrated in sunlight. This apparatus can combine with other bidirectional communication systems to establish a complete mapping all-light communication network for seamless connectivity across different environments, in which all nodes are symmetric and decentralized.