By analyzing the basic principle of Bone conduction sleep aid audio signal through beat technology, this paper studies and develops the core device of piezoelectric vibrator based on piezoelectric ceramic chip materials for stacking to generate Bone conduction sleep aid acoustic wave, and designs the sleep aid device combined with sleep aid music; Using ANSYS software to conduct modal simulation analysis on piezoelectric ceramic chips, suitable parameters were selected, and experimental tests were conducted, achieving the expected results.