Since the development of building automation systems（BMS） for many years, in addition to the influence of building modes and operating modes, existing communication technologies such as Mobus, BACnet, Lonworks, and CAN have certain limitations due to the industry and technical backgrounds of the origin of their respective communication technologies. This article introduces a new communication technology MDV-LINK, which can achieve various advantages such as arbitrary topology, free connection, strong anti-interference, time-sharing control, safety and reliability, and analyzes its application prospects.