The invention discloses a transformer substation wiring diagram automatic generation method based on a monitoring information table. The method comprises the following steps: automatically generatinga primary wiring diagram of a transformer substation by utilizing a monitoring information table of the transformer substation, establishing data model information corresponding to the monitoring information in a scheduling master station database, and mapping the established data model information to the generated primary wiring diagram of the transformer substation to realize automatic maintenance of the diagram, the model and the number of the transformer substation. According to the invention, the manpower of automation personnel is liberated, errors caused by a large amount of manual datalinks are avoided, and the automation level of scheduling is greatly improved.