The invention provides a high voltage compact transformer substation, and aims to solve the problem of large occupied areas of high voltage and medium voltage transformer substations. The high voltage compact transformer substation comprises a main transformer (2), a first equipment room (1), a second equipment room (3), a power distribution device (31), a third equipment room (5), secondary equipment (33), a fourth equipment room (9) and a fully closed composite apparatus (4), wherein the first equipment room (1) is used for accommodating the main transformer (2); the second equipment room (3) is arranged on one side of the first equipment room (1) and is connected with the first equipment room (1); the power distribution device (31) is arranged in the second equipment room (3); the third equipment room (5) is arranged on the upper part of the second equipment room (3); the sum of the height of the second equipment room (3) and the height of the third equipment room (5) is equal to the height of the first equipment room (1); the secondary equipment (33) is arranged in the third equipment room (5); the fourth equipment room (9) is arranged on the upper part of the first equipment room (1) and the upper part of the third equipment room (5), and is connected with the first equipment room (1) and the third equipment room (5) respectively; and the fully closed composite apparatus (4) is arranged inside the fourth equipment room (9). The high voltage compact transformer substation contributes to complete production of the high voltage and medium voltage transformer substations with less occupied areas.