LED acousto-optic controlled energy-saving lamp integrates sound perception, light effect induction and delay control, and has built-in sound induction module, light effect induction module and delay switch intelligent module. In the case of strong light in the daytime, the light effect sensing element will give the sensed signal value to the delay switch, and the delay switch will automatically lock, and the energy-saving lamp will not light up even if there is sound vibration. When the light is dim, the light effect sensing element will give the sensing signal value to the delay switch, and the delay switch will automatically unlock. However, whether to turn on the energy-saving lamp depends on the signal given by the sound sensing element. When there is sound vibration, the sound sensor will send a signal to the delay switch to inform it to start working, and the energy-saving lamp will light up. The delay switch is set to light for 60 seconds at the factory. If there is no sound vibration signal during this time, the delay switch will automatically turn off and the energy-saving lamp will automatically go out, waiting for the next sound signal.