The present invention relates to a transformer substation information system facing a power transformation engineering. The system is used to uniformly classify, code and identify the design data of the systems, devices and parts of different types in the power transformation engineering design. The structure of the system comprises, orderly from top to bottom, an engineering model layer, an equipment model layer, an equipment family layer and an attribute chain layer which are in layered arrangement. The engineering model layer, the equipment model layer and the equipment family layer realize the mutual quote via a scalar principle, and the attribute chain layer is quoted by the engineering model layer, the equipment model layer and the equipment family layer separately. Compared with the prior art, the transformer substation information system facing the power transformation engineering has the advantages of clear layered structure, concise construction mode, convenient information sharing, etc.