Cable lead-down facility for built single-circuit tension tower

The invention relates to a cable lead-down facility for a built single-circuit tension tower. The cable lead-down facility comprises an independent bearing table and a lead-down pole tower, wherein asupport platform is arranged at a top end of a support rod and comprises an X-shaped cross arm and a linear cross arm, the center of the X-shaped cross arm is arranged at the top of the support rod, an included angle of 45 degrees is formed between the X-shaped cross arm and a power transmission line direction, seat-type lightning arresters are arranged on the linear cross arm far away from the iron tower, seat-type cable terminals are arranged on the linear cross arm near to the iron tower, a rod body is near to the build tension tower, a plurality of layers of strut insulators are arranged at a part from a top end of the rod body to the independent bearing table at equal distance, each layer of strut insulators are arranged at two edges of a perpendicular circuit direction, and the strutinsulators are arranged a