Bone conduction hearing aid

The utility model provides a bone conduction hearing aid comprising hearing aid modules, of which each comprises a sound receiving device, an amplifier and a bone conduction vibrator, wherein the sound receiving device receives a sound signal, converts the sound signal into an electrical signal and outputs the electrical signal to the amplifier, and the amplifier amplifies the electrical signal and inputs the electrical signal to the bone conduction vibrator. The bone conduction hearing aid comprises the four hearing aid modules which are respectively in close contact with the left and right zygomatic arches and the left and right mastoid processes under the limit of an elastic fixing bracket. According to the utility model, the hearing aid modules respectively in close contact with the left and right zygomatic arches and the left and right mastoid processes are adopted, and the modules vibrate at different amplitudes for the same sound, so that users can hear the directions of sounds according to different vibration amplitudes.