The utility model provides a steel pipe shaft tower is cut -off to two sides in two return circuits that adopt triangle -shaped cross arm to arrange. It includes body of the tower, top layer ground wire cross arm, upper wire cross arm, lower floor's wire cross arm, top layer ground wire cross arm cut -offs the side from the body of the tower dorsad to be arranged on one side the perpendicular to target and cut -offs the cross arm of circuit, arranges triangle -shaped cross arm on one side towards cut -offfing the side, upper strata wire cross arm divides the three -layer, and every layer is cut -off line arrangement both sides cross arm from the parallel target of body of the tower, cut -offs the perpendicular target of side dorsad from the body of the tower and cut -off line arrangement cross arm on one side, lower floor's wire cross arm divides the three -layer, arranges triangle -shaped cross arm on one side from the body of the tower towards cut -offfing the side for every layer. The utility model discloses only adopt a basic shaft tower to realize the two sides in two return circuits and cut -off, reduced shaft tower quantity, form four return circuits after cut -offfing and continue to walk the line, avoid four return circuits to divide the use of branch, do not change the wire arrangement form of adjacent shaft tower, reduced the possibility that adjacent tower was transformed.