The invention discloses a fault accurate identification method based on real-time intra-station graph mapping. A fault vector analysis and fault diagnosis platform based on a primary topological graph scalable vector graph and a universal information model is built; fault equipment substations needing fusing are determined for a search route through a fault amount flow direction, and a macrozone information fusion platform is formed; information fusion is carried out based on the macrozone information fusion platform, and an information closed loop and an oscillograph are fused into a vector analysis graph to carry out accident property analysis and assistant decision making; in the process of accident property analysis and assistant decision making, fault information is collected and fused in an expanded macrozone, and the fault property of a fault element is judged. On a fault scene, intra-station equipment serves as the background, the flowing direction of fault current serves as an analysis interface of a display mode, judgment of the fault element can be achieved rapidly, and the fault judgment on a multi-element connection device with a converge function is especially visual and effective.