The present invention relates to a light buoy for navigational aide, which has neat appearance and does not need an additional mold for manufacture and coating the surface thereof. The light buoy for navigational aide enables a vertical rod to be easily inserted. The light buoy includes: a hollow sphere formed of a synthetic resin and having a through hole at the center of an upper and at the center of a lower end, wherein the hollow sphere is empty; the vertical rod inserted into the hollow sphere through a through hole; a polyurethane foam filling the inside of the hollow sphere while being shot by being filled in the hollow sphere around the vertical rod, wherein the polyurethane foam floats on the water while fixing the hollow sphere and the vertical rod; a light bar installed at the upper end of the vertical rod and indicating a light signal by flickering by power supply; and a weight attached to the lower end of the vertical rod and positioning the gravity center of the vertical rod to the lower end.
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