Abstract:Based on electrohydraulic integration knowledge, a packaging machine was designed which had functions of loading, sealing and transport.The composition, work principle and hydraulic principle of the automatic packaging machine were focused on. The device had functions of automatic feeding bags, counting bags, stitched mouth off and others.Practice proves that the device has stable and reliable performance, high degree of automation, quick processing speed, suitable for mass production, good packaging quality, it can work continuously.