The invention discloses an implement method of an electric substation automation system for supporting double measurement and control. In the design of a normal transformer station with voltage levels of 220KV and above 220KV, a measuring and controlling device and two protecting devices are arranged in one interval, and a single measuring and controlling device aims at the measurement and the control of a primary device. Along with the appearance of voltage step protection of 220KV and above 220KV and a measuring and controlling integrative device, a double protection/measuring and controlling integration device is configured in engineering, and thus, the problem to process data of the double measuring and controlling device by a transformer station automatic system occurs in. On the basis of unchanging the structure of the prior transformer station automatic system, a strategy of mapping double measuring and controlling practical data by virtual points is adopted to realize the access of the double measuring and controlling data.