The utility model discloses an electric transmission line tower using composite insulators, including the body of rod, the connecting sleeve has been cup jointed to the upper end of body of rod surface, all there is the ring flange both sides of connecting outer surface of sleeve through bracing piece swing joint, the ring flange is kept away from one side of connecting sleeve and is passed through bracing piece fixedly connected with equalizer ring, the equalizer ring is kept away from one side of ring flange and is passed through bracing piece fixedly connected with insulator, one side swing joint that the equalizer ring was kept away from to the insulator has the connection terminal, the top fixed mounting of the body of rod has the battery case, from left to right fixed mounting has the dc -to -ac converter in proper order, straightness sensor, wireless transmitter and battery hang down in the bottom of battery case inner chamber, the top fixed mounting of battery case has the backup pad. Comprises a pole body,