The utility model discloses a same-tower and dual-loop straight line steel pipe tower which is characterized by comprising a tower head, a tower neck, a tower body and tower legs from the top to the bottom, wherein the tower head is a drum-shaped tower head which is symmetrically provided with leads; the drum-shaped tower head comprises an upper-layer cross arm, an intermediate-layer cross arm and a lower-layer cross arm; the upper-layer cross arm, the intermediate-layer cross arm and the lower-layer cross arm are duckbilled cross arms; two ends of each cross arm are connected with I-shaped insulator strings; and the steel pipe tower further comprises an official hat-shaped ground wire bracket shared by the upper cross arm. The same-tower and dual-loop straight line steel pipe tower disclosed by the utility model meets the requirements of an electric clearance, the distance to the ground of a lead, an electromagnetic environment of an alternating current 1000kV extra-high voltage same-tower and dual-loop circuit line and other electrical requirements for an iron tower; the same-tower and dual-loop straight line steel pipe tower has the advantages of minimized single-base steel consumption of the iron tower, narrowest corridor occupied by a line, optimal structure safety and better technical economy; and the construction cost of engineering body of the alternating current 1000kV extra-high voltage same-tower and dual-loop circuit line can be effectively reduced.