The utility model discloses a system communication integrated equipment of transformer substation, including the shell, be equipped with the district that is qualified for the next round of competitions on the shell, integrated equipment's external interface uniform to the external connection, still includes central processing unit, a plurality of function integrated circuit board, power converter, power source dish and communication bus by the district that is qualified for the next round of competitions, central processing unit and each function integrated circuit board control connection, power converter is used for the working power supply voltage for the function integrated circuit board with external power supply voltage conversion, and the power source dish is used for being connected to each function integrated circuit board with the electric current after the power converter conversion, communication bus is used for transmitting the data signal between each function integrated circuit board. The utility model discloses only needing an equipment hold multiple communication interface, having avoided the multistage switching between the communication equipment, wiring, construction convenience are simple and easy, can save equipment occupation space simultaneously in a large number, save the power consumption consumption, the fibre of the jump between the reduction equipment by a wide margin.