The utility model provides a four fingers simply prop sackholder bag packagine machine, including the support, be provided with unloading mechanism on the support, hang bag opening bag mechanism, prop sackholder bag mechanism, sack lateral shifting mechanism, bag sealing mechanism, prop sackholder bag establishment of institution in the below of unloading mechanism for to hang the sack that bag opening bag mechanism opened props up and cliies, sack lateral shifting mechanism connects props sackholder bag mechanism and will prop sackholder bag mechanism and carry out horizontal rectilinear movement and locate to encapsulate to bag sealing mechanism. The utility model provides a four fingers simply prop sackholder bag packagine machine adopts the cylinder as the power supply, can adapt to low temperature, moist environment, and application range is wider, and is convenient for wash, and four fingers simply prop sackholder bag mechanism and make to the propping up and step up working energy and go on enough smoothly of sack, and the flexible operation can avoid the sack to drop, improvement production efficiency.