The present invention relates to an underwater bubble generator having a decorative function and a method for manufacturing the same, which is connected to a power source by an external power source and is provided with a pump (P) for sucking and discharging external air, the pump (P) In the bubble generating device having a flexible air hose (FH) that is freely changed in shape so that the external air is discharged into the water contained in the aquarium is lengthwise, the case 100 is formed with a plurality of air holes 102 Wow； It is symmetrically coupled to both left and right ends of the case 100, and one end of the flexible air hose (FH) is fitted to one end of the left and right both ends to supply external air into the case 100. A fixed cap 200； Both left and right ends are fixed to the fixing cap 200, and the lighting fixing connection stick 300 is built in the case 100； Positioned directly below the plurality of air holes 102 of the case 100 so that the bubbles are vertically rising upward from the bottom of the aquarium water is coupled to the upper surface of the illumination fixing connecting stick 300, LED module 400 which is formed of a water-tight coating layer 410 by epoxy resin to be continuously illuminated in the water even though the penetration of water is continuously coupled to a plurality of electrically connected to an external power source； The fixing cap 200 is coupled to the outer edge, the fixing means 500 is formed so that the bubble generating device is fixed to the inner wall surface of the glass； relates to an underwater bubble generating device having a decorative function and a method for manufacturing the same.본 발명은 장식기능을 갖는 수중 기포발생장치 및 이의 제조방법에 관한 것으로, 외부전원에 의해 전원연결되어 작동되고, 외부공기를 흡입하여 토출하는 펌프(P)가 구비되며, 상기 펌프(P)에 관결합되어 수족관에 수용된 물속으로 외부공기가 토출되도록 형태가 자유롭게 변화되는 플랙시블 에어호스(FH)가 길이방향으로 길게 형성된 기포발생장치에 있어서, 다수의 에어홀(102)이 형성된 케이스(100)와； 상기 케이스(100)의 좌우 양단에 대칭되게 결합되고, 좌우 양단의 어느 하나의 일단에 상기 플랙시블 에어호스(FH)의 일단이 끼움결합되어 외부공기를 상기 케이스(100) 내부로 공
