The present disclosure specifically discloses a substation frame, comprising: at least two supporting assemblies arranged at intervals along a first direction, at least one of the supporting assemblies comprising a first supporting part and a second supporting part that are connected to each other; and a beam assembly provided between two adjacent supporting assemblies. The first supporting part is located between the beam assembly and the second supporting part. The first supporting part is made of composite insulating material, and the second supporting part is made of metal material.