The utility model relates to an anti-swing power transmission line tangent tower with glass fiber reinforced plastic V-shaped strings in a mountain district. The anti-swing power transmission line tangent tower comprises a tower body, a ground wire support, an upper cross arm, a middle cross arm, a lower cross arm and the glass fiber reinforced plastic V-shaped strings, wherein the ground wire support, the upper cross arm, the middle cross arm and the lower cross arm are arranged on the tower body; each glass fiber reinforced plastic V-shaped string consists of glass fiber reinforced plastic insulating rods, a connecting plate and suspension clamps; the upper ends of the glass fiber reinforced plastic V-shaped strings are respectively connected with the suspension hanging plates of the upper cross arm, the lower cross arm and the lower cross arm by using Z-shaped hanging plates. According to the anti-swing power transmission line tangent tower, the withstand voltage and insulating property of glass fiber reinforced plastic material are combined with the loading feature of the V-shaped strings, so that conventional V-shaped insulator strings are prevented from being pressed to fall down or being damaged, the windage yaw of wires at the head of the tower is effectively restricted, and the electrical clearance distance is guaranteed.