The machine adopts the principle of piston filling. After the empty can is sent to the filling position, the compressed air will enter into the cylinder after passing through the pneumatic triplex parts to turn on the filling valve. Under the action of the cam, the piston will move downwards in the piston cylinder to carry out filling. After the filling is finished, the filling valve is automatically closed under the action. After it is discharged, the filled can is sent to the sealing machine for sealing by the hook chain that runs synchronously. After the can supporting mechanism of the seaming machine raise the can supporting disc, the pressing head will press the cap, and the two trolleys ill respectively carry out pre-sealing and real sealing of the can under the action of the cam. The sealed can will be sent to the can discharging conveyor belt under the action of the can discharging dialing wheel. The machine adopts PLC, frequency converter, human machine interface controlling system, having the advanced controlling technologies, such as frequency control, no can no filling and so on. The accurate production rate and quantity will be displayed on touch-screen via the kinds of sensors on the machine. Moreover, the production rate can be set on the touch screen. The main motor and other electrical equipments are all in protection state. Meanwhile all of the malfunctions can be found out easily, because they will be displayed on the touch screen. The main electric and pneumatic components of the machine are famous imported brands, and it also can be disposed according to client’s requirements.