The sterilization device includes a reaction tube, a light source, a fluid sensor and a controller. The reaction tube has a reaction chamber through which a fluid passes. The light source is used to emit light to the reaction chamber. The fluid sensor is used to sense passage of the fluid to output signal. The controller is used to control the light source to emit the light according to the signal.流體殺菌裝置包括反應腔管、光源、流體感知器及控制器。反應腔管具有一讓流體通過的反應腔。光源用以發出光源至反應腔。流體感知器用以感知流體的通過而據以發出訊號。控制器用以回應訊號,控制光源發出光線。100‧‧‧流體處理裝置105‧‧‧傳輸管件1051‧‧‧傳輸管1051a‧‧‧第一端1051b‧‧‧第二端1052‧‧‧凸緣110‧‧‧流體感知器115‧‧‧第一導熱件120‧‧‧第一電路板130‧‧‧反應腔管140‧‧‧第二電路板145‧‧‧第二導熱件145c1‧‧‧開口150‧‧‧控制器170‧‧‧光強度感知器180‧‧‧無線輸出裝置181‧‧‧顯示面板S1‧‧‧訊號F1‧‧‧流體
