Disclosed is a loudspeaking candle. The loudspeaking candle comprises a candle body and a candlewick partly inserted inside the candle body, wherein the candle body is formed inside a container through molding. The loudspeaking candle is characterized in that the candlewick is made of natural materials, and the candle body is formed by mixing liquid wax and solid wax; the upper opening of the container is provided with a middle-hollowed cover, inside which an electronic circuit board and a loudspeaking device are arranged; the container is also provided with an energy conversion device for converting light or heat into electricity; the electronic circuit board, the loudspeaking device and the energy conversion device are electrically connected. The invention also provides a preparation method of the loudspeaking candle. The loudspeaking candle is simple and reasonable in structure, and the preparation method of the loudspeaking candle is simple; during combustion, the loudspeaking candle can amplify the burning noise and accordingly enhance the auditory effects; the loudspeaking candle is powered by solar energy or heat energy generated during combustion, thereby having the advantages of being environmentally friendly in raw materials, low in cost and energy-efficient; meanwhile, the loudspeaking candle is long in service life.