A decibel sensing fragrance device, wherein a decibel sensing module senses a sound decibel to generate a decibel sensing signal, and a micro processing module receives the decibel sensing signal, and generates a decibel sensing signal according to the decibel sensing signal A control signal is used to spray a fragrance through a fragrance spray module, so as to sense the sound when the decibel is large to spray the fragrance to relieve the emotion.一種分貝感測香氛裝置，由一分貝感測模組感測聲音分貝，以產生一分貝感測訊號，再由一微處理模組接收該分貝感測訊號，且依據該分貝感測訊號產生一控制訊號，透過該控制訊號令一香氛噴灑模組進行噴灑香氛，藉以達到感測聲音分貝大時噴灑香氛以舒緩情緒之目的。
