The invention provides a hot melt adhesive packaging machine. The hot melt adhesive packaging machine comprises a material pipe. One end of the material pipe is provided with a discharging port, the discharging port communicates with the axial space in the material pipe, the bottom of a feeding cylinder is provided with a guide pipe, and the bottom end of the guide pipe communicates with the space of the material pipe, so that liquid hot melt adhesive is input; and a plunger penetrates into the space of the material pipe in a straight reciprocating motion mode, through linkage of a pushing and pressing mechanism, the plunger can push the hot melt adhesive, so that the hot melt adhesive is output from the discharging port of the material pipe at the pressure which is smaller than 100 kgf / cm2, and then the hot melt adhesive enters a mould from a feeding inlet of the mould. In this way, the hot melt adhesive can be accurately pushed in quantity at the low pressure, so that chips are safely packaged, and the hot melt adhesive is prevented from overflowing outwards.