Aiming at the issues that monochromatic optical communication is not suitable for lighting and the frequency spectrum utilization of ordinary white light communication is low, a visible light color division multiplexing communication system is de vised. The system not only maintains the normal lighting function of the light emitting diode （LED）, but also possesses the function of information transmission. At the transmitting end, three types of LEDs with fixed wavelengths are utilized for modulation. At the receiving end, narrow-band filters matching the wavelength of the transmitting end are employed to separate the optical signals of each channel. The separated optical signals are converted by a monolithic photodiode into electrical signals, which are then compared with a preset threshold and received and decoded by the microcontroller. The test results indicate that the narrow-band filter at the receiving end can effectively distinguish the broadcast signals from the three specific wavelengths of the LED. When the transmission rate is lower than 50 kHz, the eye image effect is favorable and stable communication can be achieved. However, when the transmission rate is increased to more than 50 kHz, images will present wrong color blocks and offset distortion.