A miniature fluid control device for use with a miniature pneumatic device, the miniature fluid control device comprising: a gas inlet plate comprising at least one inlet, at least one convergence channel and a central cavity, wherein a convergence chamber is defined by the central cavity, wherein after a gas is introduced into the at least one convergence channel through the at least one inlet, the gas is guided by the at least one convergence channel and converged to the convergence chamber; a resonance plate having a central aperture corresponding to the convergence chamber of the gas inlet plate; and a piezoelectric actuator comprising a suspension plate, an outer frame and a piezoelectric ceramic plate, wherein the outer frame comprises at least one bracket, and the suspension plate and the outer frame are connected with each other through the at least one bracket, wherein the piezoelectric ceramic plate is attached on a first surface of the suspension plate, wherein the gas inlet plate, the resonance plate and the piezoelectric actuator are stacked on each other sequentially, and a gap is formed between the resonance plate and the piezoelectric actuator to define a first chamber, wherein when the piezoelectric actuator is actuated, the gas is fed into the miniature fluid control device through the at least one inlet of the gas inlet plate, converged to the central cavity through the at least one convergence channel, transferred through the central aperture of the resonance plate, introduced into the first chamber, transferred downwardly through a vacant space between the at least one bracket of the piezoelectric actuator, and exited from the miniature fluid control device, wherein a length of the piezoelectric ceramic plate is equal to or less than a length of the suspension plate, a thickness of the suspension plate is 0.2mm, and a thickness of the piezoelectric ceramic plate is 0.1mm characterized in that the length of the suspension plate is in a range between 2.5mm and 3.5mm, a width of the suspension plate is in a range between 2.5mm and 3.5mm, and the length of the piezoelectric ceramic plate is in a range between 2.5mm and 3.5mm, a width of the piezoelectric ceramic plate is in a range between 2.5mm and 3.5mm. a gas inlet plate comprising at least one inlet, at least one convergence channel and a central cavity, wherein a convergence chamber is defined by the central cavity, wherein after a gas is introduced into the at least one convergence channel through the at least one inlet, the gas is guided by the at least one convergence channel and converged to the convergence chamber; a resonance plate having a central aperture corresponding to the convergence chamber of the gas inlet plate; and a piezoelectric actuator comprising a suspension plate, an outer frame and a piezoelectric ceramic plate, wherein the outer frame comprises at least one bracket, and the suspension plate and the outer frame are connected with each other through the at least one bracket, wherein the piezoelectric ceramic plate is attached on a first surface of the suspension plate, wherein the gas inlet plate, the resonance plate and the piezoelectric actuator are stacked on each other sequentially, and a gap is formed between the resonance plate and the piezoelectric actuator to define a first chamber, wherein when the piezoelectric actuator is actuated, the gas is fed into the miniature fluid control device through the at least one inlet of the gas inlet plate, converged to the central cavity through the at least one convergence channel, transferred through the central aperture of the resonance plate, introduced into the first chamber, transferred downwardly through a vacant space between the at least one bracket of the piezoelectric actuator, and exited from the miniature fluid control device, wherein a length of the piezoelectric ceramic plate is equal to or less than a length of the suspension plate, a thickness of the suspension plate is 0.2mm, and a thickness of the piezoelectric ceramic plate is 0.1mm characterized in that the length of the suspension plate is in a range between 2.5mm and 3.5mm, a width of the suspension plate is in a range between 2.5mm and 3.5mm, and the length of the piezoelectric ceramic plate is in a range between 2.5mm and 3.5mm, a width of the piezoelectric ceramic plate is in a range between 2.5mm and 3.5mm.