A kind of fluid control device,Include: piezoelectric actuator and deformable pedestal,Piezoelectric actuator is made of the surface that piezoelectric element attaches what oscillating plate,Piezoelectric element by applying voltage and deformation to drive oscillating plate bending vibration,Oscillating plate has protruding portion,Its another surface for attaching piezoelectric element； And deformable base construction,Engagement is stacked with by flex plate and flow plate to constitute,And it can synchronize and be deformed into synchronous distressed structure； Wherein,The engagement positioning corresponding with the oscillating plate of piezoelectric actuator of deformable base construction,And deformable base construction is deformed towards the direction far from oscillating plate is prominent,Make to define a certain depth between flex plate and the protruding portion of oscillating plate,And flex plate has movable part,It is arranged with respect to what protruding portion.一種流體控制裝置，包含：壓電致動器以及可變形基座，壓電致動器由壓電元件貼附於振動板之表面所構成，壓電元件受施加電壓而形變以驅動振動板彎曲振動，振動板具有突出部，其貼附壓電元件之另一表面；以及可變形基座結構，由撓性板及流通板相互堆疊接合構成，並可進行同步變形為同步變形結構；其中，可變形基座結構與壓電致動器之振動板相對應接合定位，且可變形基座結構朝遠離振動板之方向突出變形，使撓性板與振動板之突出部之間定義出一特定深度，且撓性板具有可動部，其相對於突出部設置。
