The invention discloses a voice broadcast system based on visible light communication. The voice broadcast system based on the visible light communication comprises a visible light emitter and a fixed terminal comprising a photodiode, wherein the fixed terminal is connected with the visible light emitter in a wireless visible light communication mode; the visible light emitter comprises an AD (analog/digital) converter, a parallel-series data conversion module, an LED (light emitting diode) and an LED driving circuit, and the parallel-series data conversion module comprising a first FPGA (field programmable gate array) processer; the fixed terminal comprises a photoelectric receiver, a parallel-series data conversion module, a DA (data/analog) converter and a loudspeaker box and the parallel-series data conversion module comprises a second FPGA processor. The voice broadcast system based on the visible light communication achieves a voice signal wireless communication function through lighting visible light, can be applied to voice information broadcasting in places requiring all-weather lighting such as superstores and subway stations as well as radio broadcasting in places requiring secure communication such as examination rooms, and is convenient to mount and maintain, wide in usage range, energy-saving, environmentally friendly, scientific, reasonable, safe and reliable.