The invention relates to a film packaging machine and belongs to the technical field of packaging equipment. The film packaging machine is composed of a program control device, a machine frame, a bottom film roller, a heat seal cutter, a driving roller, a top film roller, a lifting frame and a movable plate. The movable plate is installed on the upper end face of the machine frame. The driving roller is installed on one side of the movable plate through a driving motor. The bottom film roller is installed on the other side of the movable plate. The top film roller is installed between the bottom film roller and the movable plate through a front guide rod and a crossbeam. An electric heat seal lead screw and an electric lifting lead screw are installed on the movable plate through a rear guide rod and a lead screw seat. An electric driving lead screw and a lifting frame are fixedly installed at the end of the electric lifting lead screw. The electric driving lead screw is provided with a heat seal roller through a movable seat and a rotary rod. The film packaging machine is simple in structure and convenient to use, the problem that currently, in the process of manually packaging small objects through plastic bags, packaging is not tight, the labor intensity is high, and the working efficiency is low are solved, and application requirements of people are met.