The invention discloses a flow navigation system for displaying on a large screen of an electric power operation monitoring center. The flow navigation system comprises a plurality of graph layer display modules, a data storage module, graph layer activation modules and a data retrieval module, wherein each graph layer display module corresponds to a flow graph of a business flow and displays the flow graph of the corresponding business flow on the large screen of the electric power operation monitoring center; the data storage module is used for storing data of the business flow corresponding to each graph layer display module; the graph layer activation modules are as many as the graph layer display modules; each graph layer activation module is used for activating or locking the corresponding graph layer display module; the data retrieval module is used for retrieving the data of the corresponding business flow from the data storage module when any one graph layer display module is in an activated state, and displaying the data on the large screen of the electric power operation monitoring center. The flow navigation system has the technical effects that a visitor has a full view over an electric power operation monitoring business in a scene by virtue of a key monitoring link covering each key business flow in the electric power operation monitoring business.