The invention discloses a B/S architecture-based editing and displaying technology for a wiring diagram of a regulation and control cloud plant station, and the technology comprises the steps: drawinggraphic pictures of all equipment in the plant station through dragging primitives through a WEB browser; after the plant station graph is drawn, calling a searcher tool, associating regulation and control cloud model information for each equipment primitive, and after the primitives are associated, storing the equipment primitives; a plant station graph of the cooperative node is uploaded to a cloud leading node graph server through a longitudinal synchronization tool, and a graph module provides a graph browsing tool for browsing and displaying a wiring graph. According to the invention, the regulation and control cloud graph editor is deployed at a source end cooperative node, so that editing and model association functions of the regulation and control cloud plant station wiring diagram are realized; the cloud graph browser is regulated and controlled to be deployed at the cloud leading node, and the browsing function of the cloud graph is regulated and controlled; the regulationand control cloud graph provides a graph service for browsing a plant station wiring diagram.