The utility model relates to a two overhead transmission line cables that return that adopt K style of calligraphy cross arm cut -off strain insulator tower, including body of the tower, top layer ground wire cross arm, upper wire cross arm, middle level wire cross arm, lower floor's wire cross arm, the supplementary cross arm of bottom and cable lift kits, the supplementary cross arm of top layer ground wire cross arm, upper wire cross arm, middle level wire cross arm, lower floor's wire cross arm, bottom all adopts the two -segment type structure, and each layer cross arm all is the K style of calligraphy and arranges, direction is unanimous about each layer cross arm. The angle tower only need adopt basic two loop cable to cut -off the tower and realize that the cable cut -offs under two times overhead transmission line cables cut -off and draw, and construction cost is lower, and area is less, does not change former circuit arrangement, is fit for pair time overhead transmission line cable unilaterals or bilateral and cut -offs, should be close to the tangent tower construction.