The present invention relates to an intelligent substation interval secondary operation loop visualization method. The electrical connection diagram of a secondary operation loop is displayed; electrical components such as relays and/or alarm signals in the electrical connection diagram are set to be corresponding primitives according to corresponding states; and the relevant information of the secondary operation loop of a substation is acquired, and the display primitives of the electrical components and/or alarm signals are re-determined according to the information. According to the method, the visualization of the secondary operation loop is realized based on the panoramic data of the intelligent substation, so that a formed secondary operation loop interface is intuitive and clear, and therefore, a central control station or a dispatching center can be facilitated to perform remote monitoring, function maintenance and remote abnormality online diagnosis on the secondary operation loop.