The invention relates to a high
compressed air cylinder filling
machine comprising an electric driving
machine, a reduction gearbox and a
drive shaft. An eccentric driving mechanism comprising at least two eccentric driving wheels is mounted on the
drive shaft; at least two swing type compression cylinders are connected in series with a plurality of one-way valves and hose pipes to form a high compression mechanism, and are connected with a
piston, a
piston rod and a slide ring to be as a whole and then sleeved on the eccentric driving wheels through the slide ring; the other end of the
piston rod is connected with a cylinder
barrel which is sleeved on a supporting shaft which is mounted in a frame-shaped stand; a confluence plate is mounted on the frame-shaped stand and is provided with a
pressure switch, a pressure gauge and a
safety valve; the outer circumference of the compression cylinder is provided with concave-convex lines for heat dispersion; the frame-shaped stand is internally provided with a cooling fan, and the frame-shaped stander is provided with a transparent outer cover; the electric driving
machine drives the reduction gearbox to transmit rotating motion to the
drive shaft so as to enable the eccentric driving wheels to rotate and subsequently to drive the slide ring, the
piston rod and the piston entirely to make straight
reciprocating motion relative to the cylinder
barrel for compressing gas, and the gas compressed by multistage is output to fill in a
high pressure storage cylinder.