An antenna device, comprising: an antenna part configured to be vertically rotatable to change an elevation angle and horizontally rotatable to change an azimuth, and to outwardly radiate a radio wave; a vertically rotating part disposed such that a longitudinal direction thereof is along an axial line of the vertical rotation and intersects perpendicularly with an axial line of the horizontal rotation; a first rotary joint and a second rotary joint coupled to the vertically rotating part; and a waveguide path passing through the inside of the rotary joints and the inside of the vertically rotating part and connected with the antenna part, a first supporting pillar and a second supporting pillar supporting the vertically rotating part and being coupled to respective rotary joints, wherein the waveguide path comprises - a first waveguide for a vertical polarized wave, - a second waveguide for a horizontal polarized wave, and - a third waveguide connected with the antenna part and wherein the first waveguide and the second waveguide pass through the inside of the rotary joints, respectively, and are connected with the third waveguide to provide the vertical polarized wave and the horizontal polarized wave to the antenna part, respectively, and the first to third waveguides (21, 22, 25) being disposed between the first supporting pillar and the second supporting pillar. an antenna part configured to be vertically rotatable to change an elevation angle and horizontally rotatable to change an azimuth, and to outwardly radiate a radio wave; a vertically rotating part disposed such that a longitudinal direction thereof is along an axial line of the vertical rotation and intersects perpendicularly with an axial line of the horizontal rotation; a first rotary joint and a second rotary joint coupled to the vertically rotating part; and a waveguide path passing through the inside of the rotary joints and the inside of the vertically rotating part and connected with the antenna part, a first supporting pillar and a second supporting pillar supporting the vertically rotating part and being coupled to respective rotary joints, wherein the waveguide path comprises - a first waveguide for a vertical polarized wave, - a second waveguide for a horizontal polarized wave, and - a third waveguide connected with the antenna part and wherein the first waveguide and the second waveguide pass through the inside of the rotary joints, respectively, and are connected with the third waveguide to provide the vertical polarized wave and the horizontal polarized wave to the antenna part, respectively, and the first to third waveguides (21, 22, 25) being disposed between the first supporting pillar and the second supporting pillar. - a first waveguide for a vertical polarized wave, - a second waveguide for a horizontal polarized wave, and - a third waveguide connected with the antenna part and wherein the first waveguide and the second waveguide pass through the inside of the rotary joints, respectively, and are connected with the third waveguide to provide the vertical polarized wave and the horizontal polarized wave to the antenna part, respectively, and the first to third waveguides (21, 22, 25) being disposed between the first supporting pillar and the second supporting pillar.