The invention provides a double-loop combined tower head and a narrow-base power transmission tower. The double-loop combined tower head is simple in structure, small in size, higher in mechanical strength and environmentally friendly. The double-loop combined tower head includes a vertical bracket and is characterized in that at least one gold ingot-like bracket is fixed to the vertical bracket,and each gold ingot-like bracket comprises a first transverse brace (1), a second transverse brace (2), a third transverse brace (3) and a fourth transverse brace (4), wherein each first transverse brace (1) and the corresponding second transverse brace (2) are symmetric about the vertical bracket, and each third transverse brace (3) and the corresponding fourth transverse brace (4) are symmetricabout the vertical bracket; the first transverse braces (1), the second transverse braces (2), the third transverse braces (3) and the fourth transverse braces (4) are all provided with circuit hanging points, the first transverse braces (1) and the third transverse braces (3) are positioned on the same side, and the second transverse braces (2) and the fourth transverse braces (4) are positionedon the same side. The circuit hanging points on the first transverse braces (1) and the third transverse braces (3) are not positioned on the same vertical surface, and the circuit hanging points on the second transverse braces (2) and the fourth transverse braces (4) are not positioned on the same vertical surface.