The invention provides a light control system with a voice control function. The system comprises a voice processing device, a light control device and a light emitting module. The light control device is connected to the voice processing device and is also connected to the light emitting module. Multiple groups of voice voiceprint commands and multiple groups of voiceprint error commands are built in the voice processing device. When the system is used, a user speaks a corresponding voice command toward the voice processing device, the voice processing device compares the received voice command with the multiple groups of voice voiceprint commands or the multiple groups of voiceprint error commands, when a corresponding voice voiceprint command or voiceprint error command is obtained through comparison, and a control signal is sent to the light control device to allow the light emitting module to emit light. Through dual speech recognition, the accuracy of speech recognition is improved, and the purpose of voice control is achieved.