An aqua-lamp-based candle-like lighting device includes a stand accommodating therein an incandescent lamp assembly that is engageable with a power source to generate heat. The stand has an open end in which an aqua-lamp base that defines an internal chamber is mounted. An illuminator for lighting purposes is arranged at an opening of the chamber. Thus, the heat generated by the incandescent lamp assembly is employed to cause a liquid contained in the aqua lamp base to flow and show a shining effect; and the illuminator of the internal chamber serves as a twinkling night lamp. As such, the aqua-lamp-based candle-like lighting device shows dual interests of visual effects in both light twinkling and liquid flowing.