An oscillating device, comprising: a multi-section acoustic wave guiding component and an oscillation generating component including a housing unit and a vibration component, the housing unit being connected to an end of the multi-section acoustic wave guiding component in the longitudinal direction, the vibration component being disposed in a disposing space in the housing unit and oscillating via a control of a vibration signa wherein, the multi-section acoustic wave guiding component comprises: a plurality of acoustic wave guiding units (11a, 11b, 11c, 11d), each acoustic wave guiding unit (11a, 11b, 11c, 11d) having a hollow space (S1, S2, S3, S4), the plurality of acoustic wave guiding units (11a, 11b, 11c, 11d) being connected together along a longitudinal direction in such a manner that the hollow spaces (S1, S2, S3, S4) are connected in series to form the multi-section acoustic wave guiding component, and an acoustic wave guiding channel is formed inside the multi-section acoustic wave guiding component by connecting the plurality of hollow spaces (S1, S2, S3, S4) in series, and an intermediate connection component, two ends of the intermediate connection component being respectively connected in series to an adjacent acoustic wave guiding unit (11b, 11c) of the multi-section acoustic wave guiding component in such a manner that the intermediate connection component is connected in series to the acoustic wave guiding units (11b, 11c) and is located between two of the adjacent acoustic wave guiding units (11b, 11c) the oscillating device being characterized in that it is a piezoelectric oscillating device, the vibration component being a piezoelectric component, and in that the intermediate connection component is provided with a cushion structure portion (121, 121a) for diffracting the waves travelling through the plurality of acoustic wave guiding units, the cushion structure portion (121, 121a) being a concave portion recessed from an outer wall surface of the intermediate connection component towards an inner wall surface of the intermediate connection component, or recessed from the inner wall surface of the intermediate connection component towards the outer wall surface of the intermediate connection component. a plurality of acoustic wave guiding units (11a, 11b, 11c, 11d), each acoustic wave guiding unit (11a, 11b, 11c, 11d) having a hollow space (S1, S2, S3, S4), the plurality of acoustic wave guiding units (11a, 11b, 11c, 11d) being connected together along a longitudinal direction in such a manner that the hollow spaces (S1, S2, S3, S4) are connected in series to form the multi-section acoustic wave guiding component, and an acoustic wave guiding channel is formed inside the multi-section acoustic wave guiding component by connecting the plurality of hollow spaces (S1, S2, S3, S4) in series, and an intermediate connection component, two ends of the intermediate connection component being respectively connected in series to an adjacent acoustic wave guiding unit (11b, 11c) of the multi-section acoustic wave guiding component in such a manner that the intermediate connection component is connected in series to the acoustic wave guiding units (11b, 11c) and is located between two of the adjacent acoustic wave guiding units (11b, 11c) the oscillating device being characterized in that it is a piezoelectric oscillating device, the vibration component being a piezoelectric component, and in that the intermediate connection component is provided with a cushion structure portion (121, 121a) for diffracting the waves travelling through the plurality of acoustic wave guiding units, the cushion structure portion (121, 121a) being a concave portion recessed from an outer wall surface of the intermediate connection component towards an inner wall surface of the intermediate connection component, or recessed from the inner wall surface of the intermediate connection component towards the outer wall surface of the intermediate connection component.